130720615 has 16 divisors (see below), whose sum is σ = 164219328. Its totient is φ = 99703296.

The previous prime is 130720609. The next prime is 130720643. The reversal of 130720615 is 516027031.

It is a cyclic number.

It is not a de Polignac number, because 130720615 - 2¹⁹ = 130196327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130720615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37069 + ... + 40441.

It is an arithmetic number, because the mean of its divisors is an integer number (10263708).

Almost surely, 2^130720615 is an apocalyptic number.

130720615 is a deficient number, since it is larger than the sum of its proper divisors (33498713).

130720615 is a wasteful number, since it uses less digits than its factorization.

130720615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 130720615 is about 11433.3116374916. The cubic root of 130720615 is about 507.5140006006.

Adding to 130720615 its reverse (516027031), we get a palindrome (646747646).

The spelling of 130720615 in words is "one hundred thirty million, seven hundred twenty thousand, six hundred fifteen".