13259661 has 16 divisors (see below), whose sum is σ = 19046400. Its totient is φ = 8181360.

The previous prime is 13259657. The next prime is 13259669. The reversal of 13259661 is 16695231.

It is a happy number.

13259661 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13259661 - 2² = 13259657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13259669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (1190400).

Almost surely, 2^13259661 is an apocalyptic number.

It is an amenable number.

13259661 is a deficient number, since it is larger than the sum of its proper divisors (5786739).

13259661 is a wasteful number, since it uses less digits than its factorization.

13259661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256.

The product of its digits is 9720, while the sum is 33.

The square root of 13259661 is about 3641.3817432398. The cubic root of 13259661 is about 236.6886723791.

The spelling of 13259661 in words is "thirteen million, two hundred fifty-nine thousand, six hundred sixty-one".