668296288 has 24 divisors (see below), whose sum is σ = 1435318920. Its totient is φ = 303770880.

The previous prime is 668296273. The next prime is 668296289. The reversal of 668296288 is 882692866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668296289) 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, 948933 + ... + 949636.

It is an arithmetic number, because the mean of its divisors is an integer number (59804955).

Almost surely, 2^668296288 is an apocalyptic number.

It is an amenable number.

668296288 is an abundant number, since it is smaller than the sum of its proper divisors (767022632).

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

668296288 is a wasteful number, since it uses less digits than its factorization.

668296288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898590 (or 1898582 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 55.

The square root of 668296288 is about 25851.4271946444. The cubic root of 668296288 is about 874.2916882191.

The spelling of 668296288 in words is "six hundred sixty-eight million, two hundred ninety-six thousand, two hundred eighty-eight".