668132982 has 32 divisors (see below), whose sum is σ = 1619717760. Its totient is φ = 202464360.

The previous prime is 668132981. The next prime is 668133017. The reversal of 668132982 is 289231866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668132981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561808 + ... + 562995.

It is an arithmetic number, because the mean of its divisors is an integer number (50616180).

Almost surely, 2^668132982 is an apocalyptic number.

668132982 is an abundant number, since it is smaller than the sum of its proper divisors (951584778).

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

668132982 is a wasteful number, since it uses less digits than its factorization.

668132982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124825 (or 1124819 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 668132982 is about 25848.2684526449. The cubic root of 668132982 is about 874.2204679573.

The spelling of 668132982 in words is "six hundred sixty-eight million, one hundred thirty-two thousand, nine hundred eighty-two".