673724656 has 20 divisors (see below), whose sum is σ = 1424009304. Its totient is φ = 306238400.

The previous prime is 673724633. The next prime is 673724657. The reversal of 673724656 is 656427376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673724657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913815 + ... + 1914166.

Almost surely, 2^673724656 is an apocalyptic number.

It is an amenable number.

673724656 is an abundant number, since it is smaller than the sum of its proper divisors (750284648).

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

673724656 is a wasteful number, since it uses less digits than its factorization.

673724656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828000 (or 3827994 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 46.

The square root of 673724656 is about 25956.2065024918. The cubic root of 673724656 is about 876.6525096787.

The spelling of 673724656 in words is "six hundred seventy-three million, seven hundred twenty-four thousand, six hundred fifty-six".