130173665 has 4 divisors (see below), whose sum is σ = 156208404. Its totient is φ = 104138928.

The previous prime is 130173649. The next prime is 130173689. The reversal of 130173665 is 566371031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80442961 + 49730704 = 8969^2 + 7052^2 .

It is a cyclic number.

It is not a de Polignac number, because 130173665 - 2⁴ = 130173649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13017362 + ... + 13017371.

It is an arithmetic number, because the mean of its divisors is an integer number (39052101).

Almost surely, 2^130173665 is an apocalyptic number.

It is an amenable number.

130173665 is a deficient number, since it is larger than the sum of its proper divisors (26034739).

130173665 is an equidigital number, since it uses as much as digits as its factorization.

130173665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26034738.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 130173665 is about 11409.3674233062. The cubic root of 130173665 is about 506.8051788796.

The spelling of 130173665 in words is "one hundred thirty million, one hundred seventy-three thousand, six hundred sixty-five".