673307904 has 72 divisors (see below), whose sum is σ = 1835773632. Its totient is φ = 218951680.

The previous prime is 673307881. The next prime is 673307951. The reversal of 673307904 is 409703376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20797 + ... + 42179.

It is an arithmetic number, because the mean of its divisors is an integer number (25496856).

Almost surely, 2^673307904 is an apocalyptic number.

673307904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673307904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917886816).

673307904 is an abundant number, since it is smaller than the sum of its proper divisors (1162465728).

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

673307904 is a wasteful number, since it uses less digits than its factorization.

673307904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21443 (or 21429 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 673307904 is about 25948.1772770266. The cubic root of 673307904 is about 876.4717127506.

The spelling of 673307904 in words is "six hundred seventy-three million, three hundred seven thousand, nine hundred four".