72535660 has 24 divisors (see below), whose sum is σ = 157239936. Its totient is φ = 28078080.

The previous prime is 72535643. The next prime is 72535679. The reversal of 72535660 is 6653527.

It is a super-2 number, since 2×72535660² = 10522843943271200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57877 + ... + 59116.

It is an arithmetic number, because the mean of its divisors is an integer number (6551664).

Almost surely, 2^72535660 is an apocalyptic number.

It is an amenable number.

72535660 is an abundant number, since it is smaller than the sum of its proper divisors (84704276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72535660 is a wasteful number, since it uses less digits than its factorization.

72535660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117033 (or 117031 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 72535660 is about 8516.7869528361. The cubic root of 72535660 is about 417.0458997106.

The spelling of 72535660 in words is "seventy-two million, five hundred thirty-five thousand, six hundred sixty".