74385864 has 240 divisors, whose sum is σ = 256945920. Its totient is φ = 19673280.

The previous prime is 74385853. The next prime is 74385869. The reversal of 74385864 is 46858347.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74385869) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2399529 + ... + 2399559.

It is an arithmetic number, because the mean of its divisors is an integer number (1070608).

Almost surely, 2^74385864 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 74385864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128472960).

74385864 is an abundant number, since it is smaller than the sum of its proper divisors (182560056).

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

74385864 is a wasteful number, since it uses less digits than its factorization.

74385864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 66 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 74385864 is about 8624.7239955839. The cubic root of 74385864 is about 420.5621045180.

The spelling of 74385864 in words is "seventy-four million, three hundred eighty-five thousand, eight hundred sixty-four".