72865166 has 8 divisors (see below), whose sum is σ = 119233944. Its totient is φ = 33120520.

The previous prime is 72865157. The next prime is 72865189. The reversal of 72865166 is 66156827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656005 + ... + 1656048.

It is an arithmetic number, because the mean of its divisors is an integer number (14904243).

Almost surely, 2^72865166 is an apocalyptic number.

72865166 is a deficient number, since it is larger than the sum of its proper divisors (46368778).

72865166 is a wasteful number, since it uses less digits than its factorization.

72865166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312066.

The product of its digits is 120960, while the sum is 41.

The square root of 72865166 is about 8536.1095353797. The cubic root of 72865166 is about 417.6764473440.

The spelling of 72865166 in words is "seventy-two million, eight hundred sixty-five thousand, one hundred sixty-six".