72165395 has 8 divisors (see below), whose sum is σ = 88612656. Its totient is φ = 56389536.

The previous prime is 72165389. The next prime is 72165407. The reversal of 72165395 is 59356127.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72165395 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167612 + ... + 168041.

It is an arithmetic number, because the mean of its divisors is an integer number (11076582).

Almost surely, 2^72165395 is an apocalyptic number.

72165395 is a deficient number, since it is larger than the sum of its proper divisors (16447261).

72165395 is a wasteful number, since it uses less digits than its factorization.

72165395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335701.

The product of its digits is 56700, while the sum is 38.

The square root of 72165395 is about 8495.0217774883. The cubic root of 72165395 is about 416.3350723563.

The spelling of 72165395 in words is "seventy-two million, one hundred sixty-five thousand, three hundred ninety-five".