72612165 has 16 divisors (see below), whose sum is σ = 118882368. Its totient is φ = 37825536.

The previous prime is 72612161. The next prime is 72612181. The reversal of 72612165 is 56121627.

It is not a de Polignac number, because 72612165 - 2² = 72612161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72612161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55644 + ... + 56933.

It is an arithmetic number, because the mean of its divisors is an integer number (7430148).

Almost surely, 2^72612165 is an apocalyptic number.

It is an amenable number.

72612165 is a deficient number, since it is larger than the sum of its proper divisors (46270203).

72612165 is a wasteful number, since it uses less digits than its factorization.

72612165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112628.

The product of its digits is 5040, while the sum is 30.

The square root of 72612165 is about 8521.2771930034. The cubic root of 72612165 is about 417.1924707708.

The spelling of 72612165 in words is "seventy-two million, six hundred twelve thousand, one hundred sixty-five".