668707592 has 16 divisors (see below), whose sum is σ = 1432944960. Its totient is φ = 286588944.

The previous prime is 668707591. The next prime is 668707609. The reversal of 668707592 is 295707866.

It is a self number, because there is not a number n which added to its sum of digits gives 668707592.

It is not an unprimeable number, because it can be changed into a prime (668707591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970548 + ... + 5970659.

It is an arithmetic number, because the mean of its divisors is an integer number (89559060).

Almost surely, 2^668707592 is an apocalyptic number.

It is an amenable number.

668707592 is an abundant number, since it is smaller than the sum of its proper divisors (764237368).

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

668707592 is a wasteful number, since it uses less digits than its factorization.

668707592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11941220 (or 11941216 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 668707592 is about 25859.3811217515. The cubic root of 668707592 is about 874.4710128331.

The spelling of 668707592 in words is "six hundred sixty-eight million, seven hundred seven thousand, five hundred ninety-two".