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68880583630 = 2524232842781
BaseRepresentation
bin100000000100110011…
…0100100101111001110
320120210101222012022001
41000021212210233032
52112031412134010
651350541542514
74655632205035
oct1001146445716
9216711865261
1068880583630
1127237325a81
1211423b74a3a
1366595590c1
1434960a171c
151bd21e1c3a
hex10099a4bce

68880583630 has 16 divisors (see below), whose sum is σ = 124036264224. Its totient is φ = 27540852640.

The previous prime is 68880583627. The next prime is 68880583633. The reversal of 68880583630 is 3638508886.

It is an interprime number because it is at equal distance from previous prime (68880583627) and next prime (68880583633).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68880583633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397161 + ... + 1445620.

It is an arithmetic number, because the mean of its divisors is an integer number (7752266514).

Almost surely, 268880583630 is an apocalyptic number.

68880583630 is a deficient number, since it is larger than the sum of its proper divisors (55155680594).

68880583630 is a wasteful number, since it uses less digits than its factorization.

68880583630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845211.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 68880583630 in words is "sixty-eight billion, eight hundred eighty million, five hundred eighty-three thousand, six hundred thirty".

Divisors: 1 2 5 10 2423 4846 12115 24230 2842781 5685562 14213905 28427810 6888058363 13776116726 34440291815 68880583630