72628664 has 16 divisors (see below), whose sum is σ = 142099920. Its totient is φ = 34735360.

The previous prime is 72628643. The next prime is 72628681. The reversal of 72628664 is 46682627.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197177 + ... + 197544.

It is an arithmetic number, because the mean of its divisors is an integer number (8881245).

Almost surely, 2^72628664 is an apocalyptic number.

It is an amenable number.

72628664 is a deficient number, since it is larger than the sum of its proper divisors (69471256).

72628664 is a wasteful number, since it uses less digits than its factorization.

72628664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394750 (or 394746 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 72628664 is about 8522.2452440657. The cubic root of 72628664 is about 417.2240666579.

The spelling of 72628664 in words is "seventy-two million, six hundred twenty-eight thousand, six hundred sixty-four".