72610165 has 4 divisors (see below), whose sum is σ = 87132204. Its totient is φ = 58088128.

The previous prime is 72610157. The next prime is 72610193. The reversal of 72610165 is 56101627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15547249 + 57062916 = 3943^2 + 7554^2 .

It is a cyclic number.

It is not a de Polignac number, because 72610165 - 2³ = 72610157 is a prime.

It is a super-2 number, since 2×72610165² = 10544472122654450, which contains 22 as substring.

It is a Duffinian number.

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, 7261012 + ... + 7261021.

It is an arithmetic number, because the mean of its divisors is an integer number (21783051).

Almost surely, 2^72610165 is an apocalyptic number.

It is an amenable number.

72610165 is a deficient number, since it is larger than the sum of its proper divisors (14522039).

72610165 is a wasteful number, since it uses less digits than its factorization.

72610165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14522038.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 72610165 is about 8521.1598388952. The cubic root of 72610165 is about 417.1886404089.

The spelling of 72610165 in words is "seventy-two million, six hundred ten thousand, one hundred sixty-five".