667673400 has 48 divisors (see below), whose sum is σ = 2069789400. Its totient is φ = 178046080.

The previous prime is 667673387. The next prime is 667673411. The reversal of 667673400 is 4376766.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 555795 + ... + 556994.

Almost surely, 2^667673400 is an apocalyptic number.

667673400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667673400 is an abundant number, since it is smaller than the sum of its proper divisors (1402116000).

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

667673400 is a wasteful number, since it uses less digits than its factorization.

667673400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112808 (or 1112799 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 667673400 is about 25839.3769274725. The cubic root of 667673400 is about 874.0199748623.

The spelling of 667673400 in words is "six hundred sixty-seven million, six hundred seventy-three thousand, four hundred".