74506656 has 144 divisors (see below), whose sum is σ = 233041536. Its totient is φ = 20772864.

The previous prime is 74506639. The next prime is 74506661. The reversal of 74506656 is 65660547.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220920 + ... + 221256.

It is an arithmetic number, because the mean of its divisors is an integer number (1618344).

Almost surely, 2^74506656 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 74506656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116520768).

74506656 is an abundant number, since it is smaller than the sum of its proper divisors (158534880).

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

74506656 is a wasteful number, since it uses less digits than its factorization.

74506656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 74506656 is about 8631.7238139320. The cubic root of 74506656 is about 420.7896256364.

The spelling of 74506656 in words is "seventy-four million, five hundred six thousand, six hundred fifty-six".