686083886 has 8 divisors (see below), whose sum is σ = 1044486120. Its totient is φ = 337921848.

The previous prime is 686083883. The next prime is 686083903. The reversal of 686083886 is 688380686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×686083886² = 941422197257721992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686083883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559881 + ... + 2560148.

It is an arithmetic number, because the mean of its divisors is an integer number (130560765).

Almost surely, 2^686083886 is an apocalyptic number.

686083886 is a deficient number, since it is larger than the sum of its proper divisors (358402234).

686083886 is a wasteful number, since it uses less digits than its factorization.

686083886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120098.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The square root of 686083886 is about 26193.2030496463. The cubic root of 686083886 is about 881.9806823514.

The spelling of 686083886 in words is "six hundred eighty-six million, eighty-three thousand, eight hundred eighty-six".