13077565 has 8 divisors (see below), whose sum is σ = 16076088. Its totient is φ = 10206720.

The previous prime is 13077557. The next prime is 13077583. The reversal of 13077565 is 56577031.

13077565 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1666681 + 11410884 = 1291^2 + 3378^2 .

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

It is not a de Polignac number, because 13077565 - 2³ = 13077557 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 13077565.

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, 31692 + ... + 32101.

It is an arithmetic number, because the mean of its divisors is an integer number (2009511).

Almost surely, 2^13077565 is an apocalyptic number.

It is an amenable number.

13077565 is a deficient number, since it is larger than the sum of its proper divisors (2998523).

13077565 is an equidigital number, since it uses as much as digits as its factorization.

13077565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63839.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 13077565 is about 3616.2916088170. The cubic root of 13077565 is about 235.6001860653.

The spelling of 13077565 in words is "thirteen million, seventy-seven thousand, five hundred sixty-five".