72612064 has 24 divisors (see below), whose sum is σ = 163377648. Its totient is φ = 31119360.

The previous prime is 72612047. The next prime is 72612073. The reversal of 72612064 is 46021627.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161857 + ... + 162304.

It is an arithmetic number, because the mean of its divisors is an integer number (6807402).

Almost surely, 2^72612064 is an apocalyptic number.

It is an amenable number.

72612064 is an abundant number, since it is smaller than the sum of its proper divisors (90765584).

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

72612064 is a wasteful number, since it uses less digits than its factorization.

72612064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324178 (or 324170 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 72612064 is about 8521.2712666597. The cubic root of 72612064 is about 417.1922773392.

The spelling of 72612064 in words is "seventy-two million, six hundred twelve thousand, sixty-four".