683631245 has 18 divisors (see below), whose sum is σ = 902564334. Its totient is φ = 496718640.

The previous prime is 683631187. The next prime is 683631257. The reversal of 683631245 is 542136386.

It can be written as a sum of positive squares in only one way, i.e., 546904996 + 136726249 = 23386^2 + 11693^2 .

It is not a de Polignac number, because 683631245 - 2¹⁰ = 683630221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 683631199 and 683631208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 642584 + ... + 643646.

It is an arithmetic number, because the mean of its divisors is an integer number (50142463).

Almost surely, 2^683631245 is an apocalyptic number.

It is an amenable number.

683631245 is a deficient number, since it is larger than the sum of its proper divisors (218933089).

683631245 is an equidigital number, since it uses as much as digits as its factorization.

683631245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 1079 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 683631245 is about 26146.3428609050. The cubic root of 683631245 is about 880.9284471773.

Multiplying 683631245 by its product of digits (103680), we get a square (70878887481600 = 8418960²).

The spelling of 683631245 in words is "six hundred eighty-three million, six hundred thirty-one thousand, two hundred forty-five".