72666086 has 16 divisors (see below), whose sum is σ = 110898720. Its totient is φ = 35703360.

The previous prime is 72666059. The next prime is 72666091. The reversal of 72666086 is 68066627.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55730 + ... + 57018.

It is an arithmetic number, because the mean of its divisors is an integer number (6931170).

Almost surely, 2^72666086 is an apocalyptic number.

72666086 is a deficient number, since it is larger than the sum of its proper divisors (38232634).

72666086 is a wasteful number, since it uses less digits than its factorization.

72666086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 72666086 is about 8524.4405094997. The cubic root of 72666086 is about 417.2957127423.

The spelling of 72666086 in words is "seventy-two million, six hundred sixty-six thousand, eighty-six".