673664464 has 20 divisors (see below), whose sum is σ = 1423882080. Its totient is φ = 306211040.

The previous prime is 673664447. The next prime is 673664477. The reversal of 673664464 is 464466376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913644 + ... + 1913995.

It is an arithmetic number, because the mean of its divisors is an integer number (71194104).

Almost surely, 2^673664464 is an apocalyptic number.

It is an amenable number.

673664464 is an abundant number, since it is smaller than the sum of its proper divisors (750217616).

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

673664464 is a wasteful number, since it uses less digits than its factorization.

673664464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827658 (or 3827652 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 46.

The square root of 673664464 is about 25955.0469851241. The cubic root of 673664464 is about 876.6264015652.

The spelling of 673664464 in words is "six hundred seventy-three million, six hundred sixty-four thousand, four hundred sixty-four".