66866792 has 16 divisors (see below), whose sum is σ = 126887040. Its totient is φ = 33030256.

The previous prime is 66866791. The next prime is 66866809. The reversal of 66866792 is 29766866.

It is a self number, because there is not a number n which added to its sum of digits gives 66866792.

It is not an unprimeable number, because it can be changed into a prime (66866791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49688 + ... + 51015.

It is an arithmetic number, because the mean of its divisors is an integer number (7930440).

Almost surely, 2^66866792 is an apocalyptic number.

It is an amenable number.

66866792 is a deficient number, since it is larger than the sum of its proper divisors (60020248).

66866792 is a wasteful number, since it uses less digits than its factorization.

66866792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100792 (or 100788 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 66866792 is about 8177.2117497347. The cubic root of 66866792 is about 405.8854619594.

The spelling of 66866792 in words is "sixty-six million, eight hundred sixty-six thousand, seven hundred ninety-two".