72631612 has 12 divisors (see below), whose sum is σ = 127175440. Its totient is φ = 36295776.

The previous prime is 72631609. The next prime is 72631613. The reversal of 72631612 is 21613627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72631613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5689 + ... + 13327.

Almost surely, 2^72631612 is an apocalyptic number.

It is an amenable number.

72631612 is a deficient number, since it is larger than the sum of its proper divisors (54543828).

72631612 is a wasteful number, since it uses less digits than its factorization.

72631612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020 (or 10018 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 72631612 is about 8522.4182014262. The cubic root of 72631612 is about 417.2297116280.

The spelling of 72631612 in words is "seventy-two million, six hundred thirty-one thousand, six hundred twelve".