686040486 has 16 divisors (see below), whose sum is σ = 1444296000. Its totient is φ = 216644328.

The previous prime is 686040473. The next prime is 686040493. The reversal of 686040486 is 684040686.

It is a super-2 number, since 2×686040486² = 941303096862232392, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3008836 + ... + 3009063.

It is an arithmetic number, because the mean of its divisors is an integer number (90268500).

Almost surely, 2^686040486 is an apocalyptic number.

686040486 is an abundant number, since it is smaller than the sum of its proper divisors (758255514).

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

686040486 is a wasteful number, since it uses less digits than its factorization.

686040486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017923.

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 686040486 is about 26192.3745773460. The cubic root of 686040486 is about 881.9620846408.

The spelling of 686040486 in words is "six hundred eighty-six million, forty thousand, four hundred eighty-six".