13289657 has 4 divisors (see below), whose sum is σ = 13297536. Its totient is φ = 13281780.

The previous prime is 13289641. The next prime is 13289663. The reversal of 13289657 is 75698231.

13289657 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13289657 - 2⁴ = 13289641 is a prime.

It is a super-2 number, since 2×13289657² = 353229966355298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13289677) 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, 269 + ... + 5162.

It is an arithmetic number, because the mean of its divisors is an integer number (3324384).

Almost surely, 2^13289657 is an apocalyptic number.

It is an amenable number.

13289657 is a deficient number, since it is larger than the sum of its proper divisors (7879).

13289657 is an equidigital number, since it uses as much as digits as its factorization.

13289657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7878.

The product of its digits is 90720, while the sum is 41.

The square root of 13289657 is about 3645.4981826905. The cubic root of 13289657 is about 236.8670169707.

The spelling of 13289657 in words is "thirteen million, two hundred eighty-nine thousand, six hundred fifty-seven".