13056649 has 4 divisors (see below), whose sum is σ = 13360336. Its totient is φ = 12752964.

The previous prime is 13056619. The next prime is 13056653. The reversal of 13056649 is 94665031.

13056649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13056649 - 2²¹ = 10959497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13056619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151779 + ... + 151864.

It is an arithmetic number, because the mean of its divisors is an integer number (3340084).

Almost surely, 2^13056649 is an apocalyptic number.

It is an amenable number.

13056649 is a deficient number, since it is larger than the sum of its proper divisors (303687).

13056649 is an equidigital number, since it uses as much as digits as its factorization.

13056649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303686.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 13056649 is about 3613.3985387721. The cubic root of 13056649 is about 235.4745142760.

The spelling of 13056649 in words is "thirteen million, fifty-six thousand, six hundred forty-nine".