Search a number
-
+
68004688770 = 232517431033663
BaseRepresentation
bin111111010101011001…
…010011001110000010
320111112100211010102200
4333111121103032002
52103233200020040
651124012254030
74625135213514
oct772531231602
9214470733380
1068004688770
1126927968227
121121a771316
136549c52515
143411a1bbb4
151b80377630
hexfd5653382

68004688770 has 96 divisors (see below), whose sum is σ = 191566881792. Its totient is φ = 16670900736.

The previous prime is 68004688729. The next prime is 68004688771. The reversal of 68004688770 is 7788640086.

It is a super-2 number, since 2×680046887702 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68004688771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 451042 + ... + 582621.

It is an arithmetic number, because the mean of its divisors is an integer number (1995488352).

Almost surely, 268004688770 is an apocalyptic number.

68004688770 is an abundant number, since it is smaller than the sum of its proper divisors (123562193022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68004688770 is a wasteful number, since it uses less digits than its factorization.

68004688770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033736 (or 1033733 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 68004688770 in words is "sixty-eight billion, four million, six hundred eighty-eight thousand, seven hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 17 18 30 34 43 45 51 85 86 90 102 129 153 170 215 255 258 306 387 430 510 645 731 765 774 1290 1462 1530 1935 2193 3655 3870 4386 6579 7310 10965 13158 21930 32895 65790 1033663 2067326 3100989 5168315 6201978 9302967 10336630 15504945 17572271 18605934 31009890 35144542 44447509 46514835 52716813 87861355 88895018 93029670 105433626 133342527 158150439 175722710 222237545 263584065 266685054 316300878 400027581 444475090 527168130 666712635 755607653 790752195 800055162 1333425270 1511215306 1581504390 2000137905 2266822959 3778038265 4000275810 4533645918 6800468877 7556076530 11334114795 13600937754 22668229590 34002344385 68004688770