666733970 has 32 divisors (see below), whose sum is σ = 1372464000. Its totient is φ = 228445056.

The previous prime is 666733967. The next prime is 666733981. The reversal of 666733970 is 79337666.

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, 187166 + ... + 190694.

It is an arithmetic number, because the mean of its divisors is an integer number (42889500).

Almost surely, 2^666733970 is an apocalyptic number.

666733970 is an abundant number, since it is smaller than the sum of its proper divisors (705730030).

666733970 is a wasteful number, since it uses less digits than its factorization.

666733970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242.

The product of its (nonzero) digits is 857304, while the sum is 47.

The square root of 666733970 is about 25821.1922652692. The cubic root of 666733970 is about 873.6098611857.

The spelling of 666733970 in words is "six hundred sixty-six million, seven hundred thirty-three thousand, nine hundred seventy".