666775124 has 12 divisors (see below), whose sum is σ = 1168095264. Its totient is φ = 333033624.

The previous prime is 666775111. The next prime is 666775217. The reversal of 666775124 is 421577666.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 84224 + ... + 91799.

It is an arithmetic number, because the mean of its divisors is an integer number (97341272).

Almost surely, 2^666775124 is an apocalyptic number.

It is an amenable number.

666775124 is a deficient number, since it is larger than the sum of its proper divisors (501320140).

666775124 is a wasteful number, since it uses less digits than its factorization.

666775124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176974 (or 176972 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 666775124 is about 25821.9891565309. The cubic root of 666775124 is about 873.6278352714.

The spelling of 666775124 in words is "six hundred sixty-six million, seven hundred seventy-five thousand, one hundred twenty-four".