668095656 has 32 divisors (see below), whose sum is σ = 1710979200. Its totient is φ = 217266560.

The previous prime is 668095639. The next prime is 668095669. The reversal of 668095656 is 656590866.

It is a junction number, because it is equal to n+sod(n) for n = 668095599 and 668095608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338496 + ... + 340463.

It is an arithmetic number, because the mean of its divisors is an integer number (53468100).

Almost surely, 2^668095656 is an apocalyptic number.

It is an amenable number.

668095656 is an abundant number, since it is smaller than the sum of its proper divisors (1042883544).

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

668095656 is a wasteful number, since it uses less digits than its factorization.

668095656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679009 (or 679005 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The square root of 668095656 is about 25847.5464212757. The cubic root of 668095656 is about 874.2041878844.

The spelling of 668095656 in words is "six hundred sixty-eight million, ninety-five thousand, six hundred fifty-six".