666740006674 has 32 divisors (see below), whose sum is σ = 1144137885696. Its totient is φ = 285457130640.

The previous prime is 666740006651. The next prime is 666740006717. The reversal of 666740006674 is 476600047666.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70902457 + ... + 70911859.

It is an arithmetic number, because the mean of its divisors is an integer number (35754308928).

Almost surely, 2^666740006674 is an apocalyptic number.

666740006674 is a deficient number, since it is larger than the sum of its proper divisors (477397879022).

666740006674 is a wasteful number, since it uses less digits than its factorization.

666740006674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13990.

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 666740006674 in words is "six hundred sixty-six billion, seven hundred forty million, six thousand, six hundred seventy-four".