668266760 has 32 divisors (see below), whose sum is σ = 1718400960. Its totient is φ = 229119936.

The previous prime is 668266733. The next prime is 668266769. The reversal of 668266760 is 67662866.

It is not an unprimeable number, because it can be changed into a prime (668266769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193054 + ... + 1193613.

It is an arithmetic number, because the mean of its divisors is an integer number (53700030).

Almost surely, 2^668266760 is an apocalyptic number.

It is an amenable number.

668266760 is an abundant number, since it is smaller than the sum of its proper divisors (1050134200).

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

668266760 is a wasteful number, since it uses less digits than its factorization.

668266760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386685 (or 2386681 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 668266760 is about 25850.8560786679. The cubic root of 668266760 is about 874.2788114628.

The spelling of 668266760 in words is "six hundred sixty-eight million, two hundred sixty-six thousand, seven hundred sixty".