667296672 has 48 divisors (see below), whose sum is σ = 2001892032. Its totient is φ = 190656000.

The previous prime is 667296613. The next prime is 667296673. The reversal of 667296672 is 276692766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (667296673) 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 7 ways as a sum of consecutive naturals, for example, 495829 + ... + 497172.

It is an arithmetic number, because the mean of its divisors is an integer number (41706084).

Almost surely, 2^667296672 is an apocalyptic number.

It is an amenable number.

667296672 is an abundant number, since it is smaller than the sum of its proper divisors (1334595360).

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

667296672 is a wasteful number, since it uses less digits than its factorization.

667296672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993021 (or 993013 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 51.

The square root of 667296672 is about 25832.0860946227. The cubic root of 667296672 is about 873.8555582752.

The spelling of 667296672 in words is "six hundred sixty-seven million, two hundred ninety-six thousand, six hundred seventy-two".