686827264 has 36 divisors (see below), whose sum is σ = 1388366560. Its totient is φ = 339056640.

The previous prime is 686827237. The next prime is 686827277. The reversal of 686827264 is 462728686.

It is a congruent number.

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, 3244 + ... + 37204.

Almost surely, 2^686827264 is an apocalyptic number.

686827264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686827264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694183280).

686827264 is an abundant number, since it is smaller than the sum of its proper divisors (701539296).

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

686827264 is an equidigital number, since it uses as much as digits as its factorization.

686827264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34056 (or 34042 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 686827264 is about 26207.3894922787. The cubic root of 686827264 is about 882.2991120131.

The spelling of 686827264 in words is "six hundred eighty-six million, eight hundred twenty-seven thousand, two hundred sixty-four".