12982765 has 4 divisors (see below), whose sum is σ = 15579324. Its totient is φ = 10386208.

The previous prime is 12982759. The next prime is 12982789. The reversal of 12982765 is 56728921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56728921 = 53 ⋅1070357.

It can be written as a sum of positive squares in 2 ways, for example, as 4791721 + 8191044 = 2189^2 + 2862^2 .

It is a cyclic number.

It is not a de Polignac number, because 12982765 - 2⁹ = 12982253 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1298272 + ... + 1298281.

It is an arithmetic number, because the mean of its divisors is an integer number (3894831).

Almost surely, 2^12982765 is an apocalyptic number.

It is an amenable number.

12982765 is a deficient number, since it is larger than the sum of its proper divisors (2596559).

12982765 is an equidigital number, since it uses as much as digits as its factorization.

12982765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596558.

The product of its digits is 60480, while the sum is 40.

The square root of 12982765 is about 3603.1604182995. The cubic root of 12982765 is about 235.0295119116.

The spelling of 12982765 in words is "twelve million, nine hundred eighty-two thousand, seven hundred sixty-five".