666677004 has 24 divisors (see below), whose sum is σ = 1777805568. Its totient is φ = 190479120.

The previous prime is 666676973. The next prime is 666677029. The reversal of 666677004 is 400776666.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 7 ways as a sum of consecutive naturals, for example, 3968232 + ... + 3968399.

It is an arithmetic number, because the mean of its divisors is an integer number (74075232).

Almost surely, 2^666677004 is an apocalyptic number.

It is an amenable number.

666677004 is an abundant number, since it is smaller than the sum of its proper divisors (1111128564).

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

666677004 is a wasteful number, since it uses less digits than its factorization.

666677004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7936645 (or 7936643 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 666677004 is about 25820.0891555393. The cubic root of 666677004 is about 873.5849799592.

The spelling of 666677004 in words is "six hundred sixty-six million, six hundred seventy-seven thousand, four".