667162056 has 48 divisors (see below), whose sum is σ = 1833325200. Its totient is φ = 202169440.

The previous prime is 667162049. The next prime is 667162061. The reversal of 667162056 is 650261766.

It is a super-2 number, since 2×667162056² = 890210417932294272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 111966 + ... + 117773.

It is an arithmetic number, because the mean of its divisors is an integer number (38194275).

Almost surely, 2^667162056 is an apocalyptic number.

667162056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

667162056 is an abundant number, since it is smaller than the sum of its proper divisors (1166163144).

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

667162056 is a wasteful number, since it uses less digits than its factorization.

667162056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229770 (or 229755 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 667162056 is about 25829.4803664340. The cubic root of 667162056 is about 873.7967923840.

The spelling of 667162056 in words is "six hundred sixty-seven million, one hundred sixty-two thousand, fifty-six".