686825536 has 28 divisors (see below), whose sum is σ = 1364650560. Its totient is φ = 342976640.

The previous prime is 686825521. The next prime is 686825567. The reversal of 686825536 is 635528686.

It is a self number, because there is not a number n which added to its sum of digits gives 686825536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47301 + ... + 60091.

It is an arithmetic number, because the mean of its divisors is an integer number (48737520).

Almost surely, 2^686825536 is an apocalyptic number.

It is an amenable number.

686825536 is a deficient number, since it is larger than the sum of its proper divisors (677825024).

686825536 is a wasteful number, since it uses less digits than its factorization.

686825536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13642 (or 13632 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The square root of 686825536 is about 26207.3565244570. The cubic root of 686825536 is about 882.2983720822.

The spelling of 686825536 in words is "six hundred eighty-six million, eight hundred twenty-five thousand, five hundred thirty-six".