668424264 has 16 divisors (see below), whose sum is σ = 1671060720. Its totient is φ = 222808080.

The previous prime is 668424247. The next prime is 668424269. The reversal of 668424264 is 462424866.

668424264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (668424269) 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, 13925482 + ... + 13925529.

It is an arithmetic number, because the mean of its divisors is an integer number (104441295).

Almost surely, 2^668424264 is an apocalyptic number.

It is an amenable number.

668424264 is an abundant number, since it is smaller than the sum of its proper divisors (1002636456).

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

668424264 is a wasteful number, since it uses less digits than its factorization.

668424264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27851020 (or 27851016 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The square root of 668424264 is about 25853.9022973322. The cubic root of 668424264 is about 874.3474924154.

The spelling of 668424264 in words is "six hundred sixty-eight million, four hundred twenty-four thousand, two hundred sixty-four".