680654456 has 16 divisors (see below), whose sum is σ = 1331715600. Its totient is φ = 325530304.

The previous prime is 680654431. The next prime is 680654459. The reversal of 680654456 is 654456086.

680654456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680654459) 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, 1849421 + ... + 1849788.

It is an arithmetic number, because the mean of its divisors is an integer number (83232225).

Almost surely, 2^680654456 is an apocalyptic number.

It is an amenable number.

680654456 is a deficient number, since it is larger than the sum of its proper divisors (651061144).

680654456 is a wasteful number, since it uses less digits than its factorization.

680654456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699238 (or 3699234 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 680654456 is about 26089.3552239223. The cubic root of 680654456 is about 879.6479549127.

The spelling of 680654456 in words is "six hundred eighty million, six hundred fifty-four thousand, four hundred fifty-six".