72706164 has 12 divisors (see below), whose sum is σ = 169647744. Its totient is φ = 24235384.

The previous prime is 72706159. The next prime is 72706171. The reversal of 72706164 is 46160727.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3029412 + ... + 3029435.

It is an arithmetic number, because the mean of its divisors is an integer number (14137312).

Almost surely, 2^72706164 is an apocalyptic number.

It is an amenable number.

72706164 is an abundant number, since it is smaller than the sum of its proper divisors (96941580).

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

72706164 is a wasteful number, since it uses less digits than its factorization.

72706164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058854 (or 6058852 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72706164 is about 8526.7909555706. The cubic root of 72706164 is about 417.3724165838.

The spelling of 72706164 in words is "seventy-two million, seven hundred six thousand, one hundred sixty-four".