683678656 has 14 divisors (see below), whose sum is σ = 1356674960. Its totient is φ = 341839296.

The previous prime is 683678621. The next prime is 683678707. The reversal of 683678656 is 656876386.

It is a junction number, because it is equal to n+sod(n) for n = 683678597 and 683678606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5341176 + ... + 5341303.

Almost surely, 2^683678656 is an apocalyptic number.

It is an amenable number.

683678656 is a deficient number, since it is larger than the sum of its proper divisors (672996304).

683678656 is a wasteful number, since it uses less digits than its factorization.

683678656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682491 (or 10682481 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 683678656 is about 26147.2494920594. The cubic root of 683678656 is about 880.9488113397.

It can be divided in two parts, 68 and 3678656, that added together give a square (3678724 = 1918²).

The spelling of 683678656 in words is "six hundred eighty-three million, six hundred seventy-eight thousand, six hundred fifty-six".