13057639 has 8 divisors (see below), whose sum is σ = 15287328. Its totient is φ = 10919040.

The previous prime is 13057613. The next prime is 13057657. The reversal of 13057639 is 93675031.

13057639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13057639 - 2⁹ = 13057127 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13057679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22462 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (1910916).

Almost surely, 2^13057639 is an apocalyptic number.

13057639 is a deficient number, since it is larger than the sum of its proper divisors (2229689).

13057639 is an equidigital number, since it uses as much as digits as its factorization.

13057639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45545.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 13057639 is about 3613.5355263232. The cubic root of 13057639 is about 235.4804656212.

The spelling of 13057639 in words is "thirteen million, fifty-seven thousand, six hundred thirty-nine".