686788368 has 40 divisors (see below), whose sum is σ = 2027661888. Its totient is φ = 196225152.

The previous prime is 686788367. The next prime is 686788369. The reversal of 686788368 is 863887686.

686788368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (686788367) and next prime (686788369).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (686788367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021671 + ... + 1022342.

Almost surely, 2^686788368 is an apocalyptic number.

It is an amenable number.

686788368 is an abundant number, since it is smaller than the sum of its proper divisors (1340873520).

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

686788368 is a wasteful number, since it uses less digits than its factorization.

686788368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044031 (or 2044025 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 60.

The square root of 686788368 is about 26206.6474009935. The cubic root of 686788368 is about 882.2824564162.

The spelling of 686788368 in words is "six hundred eighty-six million, seven hundred eighty-eight thousand, three hundred sixty-eight".