66879020 has 48 divisors (see below), whose sum is σ = 160157088. Its totient is φ = 23239680.

The previous prime is 66879019. The next prime is 66879047. The reversal of 66879020 is 2097866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3146 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (3336606).

Almost surely, 2^66879020 is an apocalyptic number.

It is an amenable number.

66879020 is an abundant number, since it is smaller than the sum of its proper divisors (93278068).

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

66879020 is a wasteful number, since it uses less digits than its factorization.

66879020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170 (or 15168 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 66879020 is about 8177.9594031763. The cubic root of 66879020 is about 405.9102020173.

The spelling of 66879020 in words is "sixty-six million, eight hundred seventy-nine thousand, twenty".