72366618 has 32 divisors (see below), whose sum is σ = 148204800. Its totient is φ = 23549760.

The previous prime is 72366589. The next prime is 72366643. The reversal of 72366618 is 81666327.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53871 + ... + 55197.

It is an arithmetic number, because the mean of its divisors is an integer number (4631400).

Almost surely, 2^72366618 is an apocalyptic number.

72366618 is an abundant number, since it is smaller than the sum of its proper divisors (75838182).

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

72366618 is a wasteful number, since it uses less digits than its factorization.

72366618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542.

The product of its digits is 72576, while the sum is 39.

The square root of 72366618 is about 8506.8571164679. The cubic root of 72366618 is about 416.7216770747.

The spelling of 72366618 in words is "seventy-two million, three hundred sixty-six thousand, six hundred eighteen".