72610664 has 32 divisors (see below), whose sum is σ = 160963200. Its totient is φ = 30045120.

The previous prime is 72610661. The next prime is 72610669. The reversal of 72610664 is 46601627.

It is a self number, because there is not a number n which added to its sum of digits gives 72610664.

It is not an unprimeable number, because it can be changed into a prime (72610661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20732 + ... + 23979.

It is an arithmetic number, because the mean of its divisors is an integer number (5030100).

Almost surely, 2^72610664 is an apocalyptic number.

It is an amenable number.

72610664 is an abundant number, since it is smaller than the sum of its proper divisors (88352536).

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

72610664 is a wasteful number, since it uses less digits than its factorization.

72610664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44753 (or 44749 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 72610664 is about 8521.1891188965. The cubic root of 72610664 is about 417.1895960908.

The spelling of 72610664 in words is "seventy-two million, six hundred ten thousand, six hundred sixty-four".