74685864 has 64 divisors (see below), whose sum is σ = 205778880. Its totient is φ = 22400000.

The previous prime is 74685857. The next prime is 74685911. The reversal of 74685864 is 46858647.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25264 + ... + 28064.

It is an arithmetic number, because the mean of its divisors is an integer number (3215295).

Almost surely, 2^74685864 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 74685864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102889440).

74685864 is an abundant number, since it is smaller than the sum of its proper divisors (131093016).

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

74685864 is a wasteful number, since it uses less digits than its factorization.

74685864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922 (or 2918 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 74685864 is about 8642.0983563021. The cubic root of 74685864 is about 421.1267252218.

The spelling of 74685864 in words is "seventy-four million, six hundred eighty-five thousand, eight hundred sixty-four".