685383237 has 72 divisors (see below), whose sum is σ = 1330385472. Its totient is φ = 335059200.

The previous prime is 685383191. The next prime is 685383239. The reversal of 685383237 is 732383586.

It is not a de Polignac number, because 685383237 - 2⁷ = 685383109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 685383192 and 685383201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685383239) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 78312 + ... + 86622.

It is an arithmetic number, because the mean of its divisors is an integer number (18477576).

Almost surely, 2^685383237 is an apocalyptic number.

It is an amenable number.

685383237 is a deficient number, since it is larger than the sum of its proper divisors (645002235).

685383237 is a wasteful number, since it uses less digits than its factorization.

685383237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359 (or 8349 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 685383237 is about 26179.8249994151. The cubic root of 685383237 is about 881.6803452379.

The spelling of 685383237 in words is "six hundred eighty-five million, three hundred eighty-three thousand, two hundred thirty-seven".