683656393 has 32 divisors (see below), whose sum is σ = 831283200. Its totient is φ = 549654336.

The previous prime is 683656357. The next prime is 683656403. The reversal of 683656393 is 393656386.

It is not a de Polignac number, because 683656393 - 2⁹ = 683655881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683656093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2860368 + ... + 2860606.

It is an arithmetic number, because the mean of its divisors is an integer number (25977600).

Almost surely, 2^683656393 is an apocalyptic number.

It is an amenable number.

683656393 is a deficient number, since it is larger than the sum of its proper divisors (147626807).

683656393 is a wasteful number, since it uses less digits than its factorization.

683656393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its digits is 2099520, while the sum is 49.

The square root of 683656393 is about 26146.8237650388. The cubic root of 683656393 is about 880.9392489641.

The spelling of 683656393 in words is "six hundred eighty-three million, six hundred fifty-six thousand, three hundred ninety-three".