72655886 has 16 divisors (see below), whose sum is σ = 114927360. Its totient is φ = 34353720.

The previous prime is 72655883. The next prime is 72655903. The reversal of 72655886 is 68855627.

It is a self number, because there is not a number n which added to its sum of digits gives 72655886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72655883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24875 + ... + 27641.

It is an arithmetic number, because the mean of its divisors is an integer number (7182960).

Almost surely, 2^72655886 is an apocalyptic number.

72655886 is a deficient number, since it is larger than the sum of its proper divisors (42271474).

72655886 is a wasteful number, since it uses less digits than its factorization.

72655886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its digits is 806400, while the sum is 47.

The square root of 72655886 is about 8523.8422087695. The cubic root of 72655886 is about 417.2761868274.

The spelling of 72655886 in words is "seventy-two million, six hundred fifty-five thousand, eight hundred eighty-six".