686370084 has 12 divisors (see below), whose sum is σ = 1601530224. Its totient is φ = 228790024.

The previous prime is 686370073. The next prime is 686370119. The reversal of 686370084 is 480073686.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×686370084² = 942207784420334112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28598742 + ... + 28598765.

It is an arithmetic number, because the mean of its divisors is an integer number (133460852).

Almost surely, 2^686370084 is an apocalyptic number.

It is an amenable number.

686370084 is an abundant number, since it is smaller than the sum of its proper divisors (915160140).

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

686370084 is a wasteful number, since it uses less digits than its factorization.

686370084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57197514 (or 57197512 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 686370084 is about 26198.6656912141. The cubic root of 686370084 is about 882.1033039053.

The spelling of 686370084 in words is "six hundred eighty-six million, three hundred seventy thousand, eighty-four".