686804936 has 16 divisors (see below), whose sum is σ = 1291904640. Its totient is φ = 342297040.

The previous prime is 686804929. The next prime is 686804953. The reversal of 686804936 is 639408686.

It is a super-2 number, since 2×686804936² = 943402040227928192, which contains 22 as substring.

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, 135536 + ... + 140511.

It is an arithmetic number, because the mean of its divisors is an integer number (80744040).

Almost surely, 2^686804936 is an apocalyptic number.

It is an amenable number.

686804936 is a deficient number, since it is larger than the sum of its proper divisors (605099704).

686804936 is a wasteful number, since it uses less digits than its factorization.

686804936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276364 (or 276360 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 686804936 is about 26206.9635020923. The cubic root of 686804936 is about 882.2895510511.

The spelling of 686804936 in words is "six hundred eighty-six million, eight hundred four thousand, nine hundred thirty-six".