668342760 has 64 divisors (see below), whose sum is σ = 2122977600. Its totient is φ = 167740416.

The previous prime is 668342749. The next prime is 668342771. The reversal of 668342760 is 67243866.

It is an interprime number because it is at equal distance from previous prime (668342749) and next prime (668342771).

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, 161770 + ... + 165849.

It is an arithmetic number, because the mean of its divisors is an integer number (33171525).

Almost surely, 2^668342760 is an apocalyptic number.

668342760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

668342760 is an abundant number, since it is smaller than the sum of its proper divisors (1454634840).

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

668342760 is a wasteful number, since it uses less digits than its factorization.

668342760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327650 (or 327646 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 668342760 is about 25852.3260075375. The cubic root of 668342760 is about 874.3119532534.

The spelling of 668342760 in words is "six hundred sixty-eight million, three hundred forty-two thousand, seven hundred sixty".