680397344 has 24 divisors (see below), whose sum is σ = 1461308688. Its totient is φ = 309271360.

The previous prime is 680397343. The next prime is 680397349. The reversal of 680397344 is 443793086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 680397295 and 680397304.

It is not an unprimeable number, because it can be changed into a prime (680397343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966122 + ... + 966825.

It is an arithmetic number, because the mean of its divisors is an integer number (60887862).

Almost surely, 2^680397344 is an apocalyptic number.

It is an amenable number.

680397344 is an abundant number, since it is smaller than the sum of its proper divisors (780911344).

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

680397344 is a wasteful number, since it uses less digits than its factorization.

680397344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932968 (or 1932960 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 680397344 is about 26084.4272315878. The cubic root of 680397344 is about 879.5371808743.

The spelling of 680397344 in words is "six hundred eighty million, three hundred ninety-seven thousand, three hundred forty-four".