74669685408 has 84 divisors (see below), whose sum is σ = 220408156458. Its totient is φ = 24889887360.

The previous prime is 74669685397. The next prime is 74669685413. The reversal of 74669685408 is 80458696647.

74669685408 is a `hidden beast` number, since 7 + 4 + 66 + 96 + 85 + 408 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44397861264 + 30271824144 = 210708^2 + 173988^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1577103 + ... + 1623758.

Almost surely, 2^74669685408 is an apocalyptic number.

It is an amenable number.

74669685408 is an abundant number, since it is smaller than the sum of its proper divisors (145738471050).

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

74669685408 is an equidigital number, since it uses as much as digits as its factorization.

74669685408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200889 (or 3200866 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 74669685408 in words is "seventy-four billion, six hundred sixty-nine million, six hundred eighty-five thousand, four hundred eight".