668288876 has 18 divisors (see below), whose sum is σ = 1211230020. Its totient is φ = 322620592.

The previous prime is 668288839. The next prime is 668288879. The reversal of 668288876 is 678882866.

It is a super-2 number, since 2×668288876² = 893220043570686752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668288879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95966 + ... + 102693.

Almost surely, 2^668288876 is an apocalyptic number.

It is an amenable number.

668288876 is a deficient number, since it is larger than the sum of its proper divisors (542941144).

668288876 is a wasteful number, since it uses less digits than its factorization.

668288876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198721 (or 198690 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 59.

The square root of 668288876 is about 25851.2838365912. The cubic root of 668288876 is about 874.2884559831.

The spelling of 668288876 in words is "six hundred sixty-eight million, two hundred eighty-eight thousand, eight hundred seventy-six".