130866865 has 8 divisors (see below), whose sum is σ = 157543848. Its totient is φ = 104357760.

The previous prime is 130866863. The next prime is 130866893. The reversal of 130866865 is 568668031.

It can be written as a sum of positive squares in 4 ways, for example, as 13512976 + 117353889 = 3676^2 + 10833^2 .

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

It is not a de Polignac number, because 130866865 - 2¹ = 130866863 is a prime.

It is a super-2 number, since 2×130866865² = 34252272709856450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130866863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40246 + ... + 43375.

It is an arithmetic number, because the mean of its divisors is an integer number (19692981).

Almost surely, 2^130866865 is an apocalyptic number.

It is an amenable number.

130866865 is a deficient number, since it is larger than the sum of its proper divisors (26676983).

130866865 is an equidigital number, since it uses as much as digits as its factorization.

130866865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83939.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 130866865 is about 11439.7056343247. The cubic root of 130866865 is about 507.7031986580.

The spelling of 130866865 in words is "one hundred thirty million, eight hundred sixty-six thousand, eight hundred sixty-five".