130561686 has 32 divisors (see below), whose sum is σ = 290640000. Its totient is φ = 43445160.

The previous prime is 130561681. The next prime is 130561693. The reversal of 130561686 is 686165031.

It is a happy number.

130561686 is a `hidden beast` number, since 1 + 30 + 5 + 616 + 8 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 130561686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130561681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35565 + ... + 39063.

It is an arithmetic number, because the mean of its divisors is an integer number (9082500).

Almost surely, 2^130561686 is an apocalyptic number.

130561686 is an abundant number, since it is smaller than the sum of its proper divisors (160078314).

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

130561686 is a wasteful number, since it uses less digits than its factorization.

130561686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201 (or 4195 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 130561686 is about 11426.3592626873. The cubic root of 130561686 is about 507.3082401377.

The spelling of 130561686 in words is "one hundred thirty million, five hundred sixty-one thousand, six hundred eighty-six".