666670740704 has 12 divisors (see below), whose sum is σ = 1312508020824. Its totient is φ = 333335370336.

The previous prime is 666670740539. The next prime is 666670740731. The reversal of 666670740704 is 407047076666.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416730292 + ... + 10416730355.

It is an arithmetic number, because the mean of its divisors is an integer number (109375668402).

Almost surely, 2^666670740704 is an apocalyptic number.

It is an amenable number.

666670740704 is a deficient number, since it is larger than the sum of its proper divisors (645837280120).

666670740704 is a wasteful number, since it uses less digits than its factorization.

666670740704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20833460657 (or 20833460649 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 666670740704 in words is "six hundred sixty-six billion, six hundred seventy million, seven hundred forty thousand, seven hundred four".