667172982 has 32 divisors (see below), whose sum is σ = 1549972224. Its totient is φ = 187495200.

The previous prime is 667172981. The next prime is 667172999. The reversal of 667172982 is 289271766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667172981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127644 + ... + 132767.

It is an arithmetic number, because the mean of its divisors is an integer number (48436632).

Almost surely, 2^667172982 is an apocalyptic number.

667172982 is an abundant number, since it is smaller than the sum of its proper divisors (882799242).

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

667172982 is a wasteful number, since it uses less digits than its factorization.

667172982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260484.

The product of its digits is 508032, while the sum is 48.

The square root of 667172982 is about 25829.6918680808. The cubic root of 667172982 is about 873.8015623653.

The spelling of 667172982 in words is "six hundred sixty-seven million, one hundred seventy-two thousand, nine hundred eighty-two".