130644565 has 8 divisors (see below), whose sum is σ = 162179640. Its totient is φ = 100911552.

The previous prime is 130644517. The next prime is 130644587. The reversal of 130644565 is 565446031.

It can be written as a sum of positive squares in 4 ways, for example, as 18326961 + 112317604 = 4281^2 + 10598^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 130644565 - 2⁹ = 130644053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130644565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450354 + ... + 450643.

It is an arithmetic number, because the mean of its divisors is an integer number (20272455).

Almost surely, 2^130644565 is an apocalyptic number.

It is an amenable number.

130644565 is a deficient number, since it is larger than the sum of its proper divisors (31535075).

130644565 is an equidigital number, since it uses as much as digits as its factorization.

130644565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901031.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 130644565 is about 11429.9853455724. The cubic root of 130644565 is about 507.4155618374.

The spelling of 130644565 in words is "one hundred thirty million, six hundred forty-four thousand, five hundred sixty-five".