72636159 has 16 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 46968096.

The previous prime is 72636127. The next prime is 72636169. The reversal of 72636159 is 95163627.

It is not a de Polignac number, because 72636159 - 2⁵ = 72636127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72636169) 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, 17332 + ... + 21110.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^72636159 is an apocalyptic number.

72636159 is a deficient number, since it is larger than the sum of its proper divisors (27155841).

72636159 is a wasteful number, since it uses less digits than its factorization.

72636159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974.

The product of its digits is 68040, while the sum is 39.

The square root of 72636159 is about 8522.6849642586. The cubic root of 72636159 is about 417.2384181395.

The spelling of 72636159 in words is "seventy-two million, six hundred thirty-six thousand, one hundred fifty-nine".