683320644 has 48 divisors (see below), whose sum is σ = 1875787200. Its totient is φ = 214374528.

The previous prime is 683320619. The next prime is 683320667. The reversal of 683320644 is 446023386.

It is a happy number.

683320644 is a `hidden beast` number, since 6 + 8 + 3 + 3 + 2 + 0 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 683320599 and 683320608.

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 15 ways as a sum of consecutive naturals, for example, 184254 + ... + 187925.

It is an arithmetic number, because the mean of its divisors is an integer number (39078900).

Almost surely, 2^683320644 is an apocalyptic number.

It is an amenable number.

683320644 is an abundant number, since it is smaller than the sum of its proper divisors (1192466556).

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

683320644 is a wasteful number, since it uses less digits than its factorization.

683320644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372209 (or 372201 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 683320644 is about 26140.4025217670. The cubic root of 683320644 is about 880.7950132988.

The spelling of 683320644 in words is "six hundred eighty-three million, three hundred twenty thousand, six hundred forty-four".