668976597770 has 32 divisors (see below), whose sum is σ = 1300171364352. Its totient is φ = 246361799232.

The previous prime is 668976597769. The next prime is 668976597871. The reversal of 668976597770 is 77795679866.

It is a junction number, because it is equal to n+sod(n) for n = 668976597691 and 668976597700.

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, 6668192 + ... + 6767771.

It is an arithmetic number, because the mean of its divisors is an integer number (40630355136).

Almost surely, 2^668976597770 is an apocalyptic number.

668976597770 is a deficient number, since it is larger than the sum of its proper divisors (631194766582).

668976597770 is a wasteful number, since it uses less digits than its factorization.

668976597770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436366.

The product of its (nonzero) digits is 1680315840, while the sum is 77.

The spelling of 668976597770 in words is "six hundred sixty-eight billion, nine hundred seventy-six million, five hundred ninety-seven thousand, seven hundred seventy".