666874100 has 36 divisors (see below), whose sum is σ = 1480780224. Its totient is φ = 260544480.

The previous prime is 666874073. The next prime is 666874123. The reversal of 666874100 is 1478666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73244 + ... + 81843.

It is an arithmetic number, because the mean of its divisors is an integer number (41132784).

Almost surely, 2^666874100 is an apocalyptic number.

It is an amenable number.

666874100 is an abundant number, since it is smaller than the sum of its proper divisors (813906124).

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

666874100 is a wasteful number, since it uses less digits than its factorization.

666874100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155144 (or 155137 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 666874100 is about 25823.9055915251. The cubic root of 666874100 is about 873.6710601946.

The spelling of 666874100 in words is "six hundred sixty-six million, eight hundred seventy-four thousand, one hundred".