686689457714 has 64 divisors (see below), whose sum is σ = 1183559798400. Its totient is φ = 296189457408.

The previous prime is 686689457689. The next prime is 686689457723. The reversal of 686689457714 is 417754986686.

It is a super-2 number, since 2×686689457714² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10748714 + ... + 10812410.

It is an arithmetic number, because the mean of its divisors is an integer number (18493121850).

Almost surely, 2^686689457714 is an apocalyptic number.

686689457714 is a deficient number, since it is larger than the sum of its proper divisors (496870340686).

686689457714 is a wasteful number, since it uses less digits than its factorization.

686689457714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64027.

The product of its digits is 487710720, while the sum is 71.

The spelling of 686689457714 in words is "six hundred eighty-six billion, six hundred eighty-nine million, four hundred fifty-seven thousand, seven hundred fourteen".