667402944 has 56 divisors (see below), whose sum is σ = 1901677680. Its totient is φ = 205353984.

The previous prime is 667402933. The next prime is 667402951. The reversal of 667402944 is 449204766.

It is a junction number, because it is equal to n+sod(n) for n = 667402896 and 667402905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131199 + ... + 136190.

It is an arithmetic number, because the mean of its divisors is an integer number (33958530).

Almost surely, 2^667402944 is an apocalyptic number.

667402944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

667402944 is an abundant number, since it is smaller than the sum of its proper divisors (1234274736).

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

667402944 is a wasteful number, since it uses less digits than its factorization.

667402944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267417 (or 267407 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 667402944 is about 25834.1429894626. The cubic root of 667402944 is about 873.9019451635.

The spelling of 667402944 in words is "six hundred sixty-seven million, four hundred two thousand, nine hundred forty-four".