74635656 has 16 divisors (see below), whose sum is σ = 186589200. Its totient is φ = 24878544.

The previous prime is 74635651. The next prime is 74635681. The reversal of 74635656 is 65653647.

It is a super-2 number, since 2×74635656² = 11140962293100672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74635651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554886 + ... + 1554933.

It is an arithmetic number, because the mean of its divisors is an integer number (11661825).

Almost surely, 2^74635656 is an apocalyptic number.

It is an amenable number.

74635656 is an abundant number, since it is smaller than the sum of its proper divisors (111953544).

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

74635656 is a wasteful number, since it uses less digits than its factorization.

74635656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109828 (or 3109824 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 74635656 is about 8639.1930178692. The cubic root of 74635656 is about 421.0323357827.

Subtracting from 74635656 its reverse (65653647), we obtain a square (8982009 = 2997²).

The spelling of 74635656 in words is "seventy-four million, six hundred thirty-five thousand, six hundred fifty-six".