74707757656 has 16 divisors (see below), whose sum is σ = 160088052240. Its totient is φ = 32017610400.

The previous prime is 74707757633. The next prime is 74707757713. The reversal of 74707757656 is 65675770747.

It is a happy number.

It is a super-2 number, since 2×74707757656² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74707757594 and 74707757603.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 667033495 + ... + 667033606.

It is an arithmetic number, because the mean of its divisors is an integer number (10005503265).

Almost surely, 2^74707757656 is an apocalyptic number.

It is an amenable number.

74707757656 is an abundant number, since it is smaller than the sum of its proper divisors (85380294584).

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

74707757656 is a wasteful number, since it uses less digits than its factorization.

74707757656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334067114 (or 1334067110 counting only the distinct ones).

The product of its (nonzero) digits is 60505200, while the sum is 61.

The spelling of 74707757656 in words is "seventy-four billion, seven hundred seven million, seven hundred fifty-seven thousand, six hundred fifty-six".