72661874 has 16 divisors (see below), whose sum is σ = 110170368. Its totient is φ = 35940912.

The previous prime is 72661843. The next prime is 72661877. The reversal of 72661874 is 47816627.

It is not an unprimeable number, because it can be changed into a prime (72661877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87449 + ... + 88275.

It is an arithmetic number, because the mean of its divisors is an integer number (6885648).

Almost surely, 2^72661874 is an apocalyptic number.

72661874 is a deficient number, since it is larger than the sum of its proper divisors (37508494).

72661874 is a wasteful number, since it uses less digits than its factorization.

72661874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its digits is 112896, while the sum is 41.

The square root of 72661874 is about 8524.1934515824. The cubic root of 72661874 is about 417.2876499096.

The spelling of 72661874 in words is "seventy-two million, six hundred sixty-one thousand, eight hundred seventy-four".