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68626614584 = 2311297730879
BaseRepresentation
bin111111111010011101…
…110000100100111000
320120010201002020021002
4333322131300210320
52111021403131314
651305430304132
74646426412353
oct777235604470
9216121066232
1068626614584
1127116a31300
1211372ab8048
136618a56c68
14347047129a
151bb9c76ade
hexffa770938

68626614584 has 48 divisors (see below), whose sum is σ = 142894348800. Its totient is φ = 30872286720.

The previous prime is 68626614571. The next prime is 68626614587. The reversal of 68626614584 is 48541662686.

It is a super-2 number, since 2×686266145842 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68626614587) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271544 + ... + 459335.

It is an arithmetic number, because the mean of its divisors is an integer number (2976965600).

Almost surely, 268626614584 is an apocalyptic number.

It is an amenable number.

68626614584 is an abundant number, since it is smaller than the sum of its proper divisors (74267734216).

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

68626614584 is a wasteful number, since it uses less digits than its factorization.

68626614584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731004 (or 730989 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 56.

The spelling of 68626614584 in words is "sixty-eight billion, six hundred twenty-six million, six hundred fourteen thousand, five hundred eighty-four".

Divisors: 1 2 4 8 11 22 44 88 97 121 194 242 388 484 776 968 1067 2134 4268 8536 11737 23474 46948 93896 730879 1461758 2923516 5847032 8039669 16079338 32158676 64317352 70895263 88436359 141790526 176872718 283581052 353745436 567162104 707490872 779847893 1559695786 3119391572 6238783144 8578326823 17156653646 34313307292 68626614584