66879432 has 48 divisors (see below), whose sum is σ = 187845840. Its totient is φ = 22292496.

The previous prime is 66879419. The next prime is 66879437. The reversal of 66879432 is 23497866.

It is not an unprimeable number, because it can be changed into a prime (66879437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15258 + ... + 19145.

It is an arithmetic number, because the mean of its divisors is an integer number (3913455).

Almost surely, 2^66879432 is an apocalyptic number.

It is an amenable number.

66879432 is an abundant number, since it is smaller than the sum of its proper divisors (120966408).

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

66879432 is a wasteful number, since it uses less digits than its factorization.

66879432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34424 (or 34408 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 66879432 is about 8177.9845927955. The cubic root of 66879432 is about 405.9110355356.

The spelling of 66879432 in words is "sixty-six million, eight hundred seventy-nine thousand, four hundred thirty-two".