72536997 has 24 divisors (see below), whose sum is σ = 105460704. Its totient is φ = 44326464.

The previous prime is 72536987. The next prime is 72536999. The reversal of 72536997 is 79963527.

It is not a de Polignac number, because 72536997 - 2¹⁰ = 72535973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72536999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87298 + ... + 88124.

It is an arithmetic number, because the mean of its divisors is an integer number (4394196).

Almost surely, 2^72536997 is an apocalyptic number.

It is an amenable number.

72536997 is a deficient number, since it is larger than the sum of its proper divisors (32923707).

72536997 is a wasteful number, since it uses less digits than its factorization.

72536997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1016 counting only the distinct ones).

The product of its digits is 714420, while the sum is 48.

The square root of 72536997 is about 8516.8654445165. The cubic root of 72536997 is about 417.0484620684.

The spelling of 72536997 in words is "seventy-two million, five hundred thirty-six thousand, nine hundred ninety-seven".