683687825 has 6 divisors (see below), whose sum is σ = 847772934. Its totient is φ = 546950240.

The previous prime is 683687819. The next prime is 683687867. The reversal of 683687825 is 528786386.

It can be written as a sum of positive squares in 3 ways, for example, as 56085121 + 627602704 = 7489^2 + 25052^2 .

It is not a de Polignac number, because 683687825 - 2⁸ = 683687569 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 5 ways as a sum of consecutive naturals, for example, 13673732 + ... + 13673781.

It is an arithmetic number, because the mean of its divisors is an integer number (141295489).

Almost surely, 2^683687825 is an apocalyptic number.

It is an amenable number.

683687825 is a deficient number, since it is larger than the sum of its proper divisors (164085109).

683687825 is a wasteful number, since it uses less digits than its factorization.

683687825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27347523 (or 27347518 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The square root of 683687825 is about 26147.4248254011. The cubic root of 683687825 is about 880.9527495366.

The spelling of 683687825 in words is "six hundred eighty-three million, six hundred eighty-seven thousand, eight hundred twenty-five".