130686805 has 12 divisors (see below), whose sum is σ = 163942380. Its totient is φ = 100001792.

The previous prime is 130686797. The next prime is 130686811. The reversal of 130686805 is 508686031.

It can be written as a sum of positive squares in 2 ways, for example, as 48566961 + 82119844 = 6969^2 + 9062^2 .

It is not a de Polignac number, because 130686805 - 2³ = 130686797 is a prime.

It is a super-2 number, since 2×130686805² = 34158082002216050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22060 + ... + 27349.

It is an arithmetic number, because the mean of its divisors is an integer number (13661865).

Almost surely, 2^130686805 is an apocalyptic number.

It is an amenable number.

130686805 is a deficient number, since it is larger than the sum of its proper divisors (33255575).

130686805 is an equidigital number, since it uses as much as digits as its factorization.

130686805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49460 (or 49437 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 130686805 is about 11431.8329676391. The cubic root of 130686805 is about 507.4702418103.

The spelling of 130686805 in words is "one hundred thirty million, six hundred eighty-six thousand, eight hundred five".