667400004 has 36 divisors (see below), whose sum is σ = 1775832240. Its totient is φ = 210757680.

The previous prime is 667400003. The next prime is 667400011. The reversal of 667400004 is 400004766.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (667400003) 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 11 ways as a sum of consecutive naturals, for example, 487182 + ... + 488549.

Almost surely, 2^667400004 is an apocalyptic number.

It is an amenable number.

667400004 is an abundant number, since it is smaller than the sum of its proper divisors (1108432236).

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

667400004 is a wasteful number, since it uses less digits than its factorization.

667400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975760 (or 975755 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 667400004 is about 25834.0860879575. The cubic root of 667400004 is about 873.9006619429.

The spelling of 667400004 in words is "six hundred sixty-seven million, four hundred thousand, four".