672864920 has 256 divisors, whose sum is σ = 1974067200. Its totient is φ = 200724480.

The previous prime is 672864919. The next prime is 672864937. The reversal of 672864920 is 29468276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7560236 + ... + 7560324.

It is an arithmetic number, because the mean of its divisors is an integer number (7711200).

Almost surely, 2^672864920 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 672864920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987033600).

672864920 is an abundant number, since it is smaller than the sum of its proper divisors (1301202280).

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

672864920 is a wasteful number, since it uses less digits than its factorization.

672864920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 672864920 is about 25939.6399358202. The cubic root of 672864920 is about 876.2794539425.

The spelling of 672864920 in words is "six hundred seventy-two million, eight hundred sixty-four thousand, nine hundred twenty".