74905684 has 12 divisors (see below), whose sum is σ = 149811424. Its totient is φ = 32102424.

The previous prime is 74905681. The next prime is 74905697. The reversal of 74905684 is 48650947.

74905684 is an admirable number.

It is a super-2 number, since 2×74905684² = 11221722991015712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74905684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74905681) 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, 1337574 + ... + 1337629.

Almost surely, 2^74905684 is an apocalyptic number.

It is an amenable number.

74905684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

74905684 is a wasteful number, since it uses less digits than its factorization.

74905684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675214 (or 2675212 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 74905684 is about 8654.8069880269. The cubic root of 74905684 is about 421.5394825082.

The spelling of 74905684 in words is "seventy-four million, nine hundred five thousand, six hundred eighty-four".