673712256 has 128 divisors (see below), whose sum is σ = 2084227200. Its totient is φ = 188817408.

The previous prime is 673712231. The next prime is 673712341. The reversal of 673712256 is 652217376.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140100 + ... + 144828.

It is an arithmetic number, because the mean of its divisors is an integer number (16283025).

Almost surely, 2^673712256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673712256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042113600).

673712256 is an abundant number, since it is smaller than the sum of its proper divisors (1410514944).

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

673712256 is a wasteful number, since it uses less digits than its factorization.

673712256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806 (or 4794 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 673712256 is about 25955.9676375203. The cubic root of 673712256 is about 876.6471313402.

The spelling of 673712256 in words is "six hundred seventy-three million, seven hundred twelve thousand, two hundred fifty-six".