667673404 has 6 divisors (see below), whose sum is σ = 1168428464. Its totient is φ = 333836700.

The previous prime is 667673387. The next prime is 667673411. The reversal of 667673404 is 404376766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83459172 + ... + 83459179.

Almost surely, 2^667673404 is an apocalyptic number.

It is an amenable number.

667673404 is a deficient number, since it is larger than the sum of its proper divisors (500755060).

667673404 is a wasteful number, since it uses less digits than its factorization.

667673404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166918355 (or 166918353 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The square root of 667673404 is about 25839.3770048738. The cubic root of 667673404 is about 874.0199766077.

The spelling of 667673404 in words is "six hundred sixty-seven million, six hundred seventy-three thousand, four hundred four".