667672404 has 48 divisors (see below), whose sum is σ = 1782872448. Its totient is φ = 190505088.

The previous prime is 667672373. The next prime is 667672469. The reversal of 667672404 is 404276766.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61962 + ... + 71934.

It is an arithmetic number, because the mean of its divisors is an integer number (37143176).

Almost surely, 2^667672404 is an apocalyptic number.

It is an amenable number.

667672404 is an abundant number, since it is smaller than the sum of its proper divisors (1115200044).

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

667672404 is a wasteful number, since it uses less digits than its factorization.

667672404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784 (or 10782 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 667672404 is about 25839.3576545548. The cubic root of 667672404 is about 874.0195402565.

The spelling of 667672404 in words is "six hundred sixty-seven million, six hundred seventy-two thousand, four hundred four".