74707656 has 48 divisors (see below), whose sum is σ = 198420240. Its totient is φ = 23435520.

The previous prime is 74707609. The next prime is 74707679. The reversal of 74707656 is 65670747.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1551 + ... + 12321.

It is an arithmetic number, because the mean of its divisors is an integer number (4133755).

Almost surely, 2^74707656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74707656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99210120).

74707656 is an abundant number, since it is smaller than the sum of its proper divisors (123712584).

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

74707656 is a wasteful number, since it uses less digits than its factorization.

74707656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10814 (or 10793 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 74707656 is about 8643.3590692508. The cubic root of 74707656 is about 421.1676803221.

The spelling of 74707656 in words is "seventy-four million, seven hundred seven thousand, six hundred fifty-six".