667867704 has 64 divisors (see below), whose sum is σ = 1910438400. Its totient is φ = 190594944.

The previous prime is 667867703. The next prime is 667867741. The reversal of 667867704 is 407768766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667867703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185877 + ... + 189435.

It is an arithmetic number, because the mean of its divisors is an integer number (29850600).

Almost surely, 2^667867704 is an apocalyptic number.

It is an amenable number.

667867704 is an abundant number, since it is smaller than the sum of its proper divisors (1242570696).

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

667867704 is a wasteful number, since it uses less digits than its factorization.

667867704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 51.

The square root of 667867704 is about 25843.1364969502. The cubic root of 667867704 is about 874.1047513942.

The spelling of 667867704 in words is "six hundred sixty-seven million, eight hundred sixty-seven thousand, seven hundred four".