13630765 has 4 divisors (see below), whose sum is σ = 16356924. Its totient is φ = 10904608.

The previous prime is 13630741. The next prime is 13630769. The reversal of 13630765 is 56703631.

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 1394761 + 12236004 = 1181^2 + 3498^2 .

It is a cyclic number.

It is not a de Polignac number, because 13630765 - 2⁷ = 13630637 is a prime.

It is a Smith number, since the sum of its digits (31) 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 zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13630769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363072 + ... + 1363081.

It is an arithmetic number, because the mean of its divisors is an integer number (4089231).

Almost surely, 2^13630765 is an apocalyptic number.

It is an amenable number.

13630765 is a deficient number, since it is larger than the sum of its proper divisors (2726159).

13630765 is an equidigital number, since it uses as much as digits as its factorization.

13630765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726158.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 13630765 is about 3691.9865926084. The cubic root of 13630765 is about 238.8764906331.

The spelling of 13630765 in words is "thirteen million, six hundred thirty thousand, seven hundred sixty-five".