686739360 has 48 divisors (see below), whose sum is σ = 2163230496. Its totient is φ = 183130368.

The previous prime is 686739353. The next prime is 686739413. The reversal of 686739360 is 63937686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×686739360² = 943221897146419200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714874 + ... + 715833.

It is an arithmetic number, because the mean of its divisors is an integer number (45067302).

Almost surely, 2^686739360 is an apocalyptic number.

686739360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

686739360 is an abundant number, since it is smaller than the sum of its proper divisors (1476491136).

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

686739360 is a wasteful number, since it uses less digits than its factorization.

686739360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430725 (or 1430717 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 686739360 is about 26205.7123543704. The cubic root of 686739360 is about 882.2614698798.

The spelling of 686739360 in words is "six hundred eighty-six million, seven hundred thirty-nine thousand, three hundred sixty".