72210165 has 16 divisors (see below), whose sum is σ = 121617600. Its totient is φ = 36484992.

The previous prime is 72210139. The next prime is 72210181. The reversal of 72210165 is 56101227.

It is not a de Polignac number, because 72210165 - 2⁹ = 72209653 is a prime.

It is a congruent 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, 126400 + ... + 126969.

It is an arithmetic number, because the mean of its divisors is an integer number (7601100).

Almost surely, 2^72210165 is an apocalyptic number.

It is an amenable number.

72210165 is a deficient number, since it is larger than the sum of its proper divisors (49407435).

72210165 is a wasteful number, since it uses less digits than its factorization.

72210165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253396.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 72210165 is about 8497.6564416314. The cubic root of 72210165 is about 416.4211499379.

The spelling of 72210165 in words is "seventy-two million, two hundred ten thousand, one hundred sixty-five".