74020688 has 20 divisors (see below), whose sum is σ = 163903200. Its totient is φ = 31723104.

The previous prime is 74020679. The next prime is 74020691. The reversal of 74020688 is 88602047.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330338 + ... + 330561.

It is an arithmetic number, because the mean of its divisors is an integer number (8195160).

Almost surely, 2^74020688 is an apocalyptic number.

It is an amenable number.

74020688 is an abundant number, since it is smaller than the sum of its proper divisors (89882512).

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

74020688 is a wasteful number, since it uses less digits than its factorization.

74020688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660914 (or 660908 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 74020688 is about 8603.5276485869. The cubic root of 74020688 is about 419.8727656925.

The spelling of 74020688 in words is "seventy-four million, twenty thousand, six hundred eighty-eight".