72664474 has 16 divisors (see below), whose sum is σ = 115567200. Its totient is φ = 34169904.

The previous prime is 72664439. The next prime is 72664547. The reversal of 72664474 is 47446627.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597 + ... + 12160.

It is an arithmetic number, because the mean of its divisors is an integer number (7222950).

Almost surely, 2^72664474 is an apocalyptic number.

72664474 is a deficient number, since it is larger than the sum of its proper divisors (42902726).

72664474 is a wasteful number, since it uses less digits than its factorization.

72664474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13917.

The product of its digits is 225792, while the sum is 40.

The square root of 72664474 is about 8524.3459573154. The cubic root of 72664474 is about 417.2926270036.

The spelling of 72664474 in words is "seventy-two million, six hundred sixty-four thousand, four hundred seventy-four".