13120765 has 8 divisors (see below), whose sum is σ = 17994240. Its totient is φ = 8997072.

The previous prime is 13120759. The next prime is 13120777. The reversal of 13120765 is 56702131.

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

It is not a de Polignac number, because 13120765 - 2⁹ = 13120253 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 187405 + ... + 187474.

It is an arithmetic number, because the mean of its divisors is an integer number (2249280).

Almost surely, 2^13120765 is an apocalyptic number.

It is an amenable number.

13120765 is a deficient number, since it is larger than the sum of its proper divisors (4873475).

13120765 is an equidigital number, since it uses as much as digits as its factorization.

13120765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374891.

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

The square root of 13120765 is about 3622.2596538625. The cubic root of 13120765 is about 235.8593255767.

Adding to 13120765 its reverse (56702131), we get a palindrome (69822896).

The spelling of 13120765 in words is "thirteen million, one hundred twenty thousand, seven hundred sixty-five".