686682052 has 12 divisors (see below), whose sum is σ = 1373364160. Its totient is φ = 294292296.

The previous prime is 686681993. The next prime is 686682077. The reversal of 686682052 is 250286686.

686682052 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 12262152 + ... + 12262207.

Almost surely, 2^686682052 is an apocalyptic number.

It is an amenable number.

686682052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686682052 is a wasteful number, since it uses less digits than its factorization.

686682052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24524370 (or 24524368 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 686682052 is about 26204.6189058341. The cubic root of 686682052 is about 882.2369277950.

The spelling of 686682052 in words is "six hundred eighty-six million, six hundred eighty-two thousand, fifty-two".