130722865 has 32 divisors (see below), whose sum is σ = 199745280. Its totient is φ = 79881984.

The previous prime is 130722859. The next prime is 130722871. The reversal of 130722865 is 568227031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130722859) and next prime (130722871).

It is not a de Polignac number, because 130722865 - 2⁷ = 130722737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130722865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8242 + ... + 18148.

It is an arithmetic number, because the mean of its divisors is an integer number (6242040).

Almost surely, 2^130722865 is an apocalyptic number.

It is an amenable number.

130722865 is a deficient number, since it is larger than the sum of its proper divisors (69022415).

130722865 is a wasteful number, since it uses less digits than its factorization.

130722865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 130722865 is about 11433.4100337563. The cubic root of 130722865 is about 507.5169124085.

Adding to 130722865 its reverse (568227031), we get a palindrome (698949896).

The spelling of 130722865 in words is "one hundred thirty million, seven hundred twenty-two thousand, eight hundred sixty-five".