130686905 has 16 divisors (see below), whose sum is σ = 171778320. Its totient is φ = 95004672.

The previous prime is 130686869. The next prime is 130686953. The reversal of 130686905 is 509686031.

It can be written as a sum of positive squares in 8 ways, for example, as 17732521 + 112954384 = 4211^2 + 10628^2 .

It is a cyclic number.

It is not a de Polignac number, because 130686905 - 2⁶ = 130686841 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24044 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (10736145).

Almost surely, 2^130686905 is an apocalyptic number.

It is an amenable number.

130686905 is a deficient number, since it is larger than the sum of its proper divisors (41091415).

130686905 is a wasteful number, since it uses less digits than its factorization.

130686905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53068.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 130686905 is about 11431.8373413901. The cubic root of 130686905 is about 507.4703712470.

The spelling of 130686905 in words is "one hundred thirty million, six hundred eighty-six thousand, nine hundred five".