66874936 has 32 divisors (see below), whose sum is σ = 132612480. Its totient is φ = 31564800.

The previous prime is 66874931. The next prime is 66874939. The reversal of 66874936 is 63947866.

It is a self number, because there is not a number n which added to its sum of digits gives 66874936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66874931) 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, 6880 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (4144140).

Almost surely, 2^66874936 is an apocalyptic number.

It is an amenable number.

66874936 is a deficient number, since it is larger than the sum of its proper divisors (65737544).

66874936 is a wasteful number, since it uses less digits than its factorization.

66874936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655 (or 6651 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 66874936 is about 8177.7097038229. The cubic root of 66874936 is about 405.9019394809.

The spelling of 66874936 in words is "sixty-six million, eight hundred seventy-four thousand, nine hundred thirty-six".