13323657 has 4 divisors (see below), whose sum is σ = 17764880. Its totient is φ = 8882436.

The previous prime is 13323649. The next prime is 13323683. The reversal of 13323657 is 75632331.

13323657 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 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 not a de Polignac number, because 13323657 - 2³ = 13323649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13323757) 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, 2220607 + ... + 2220612.

It is an arithmetic number, because the mean of its divisors is an integer number (4441220).

Almost surely, 2^13323657 is an apocalyptic number.

It is an amenable number.

13323657 is a deficient number, since it is larger than the sum of its proper divisors (4441223).

13323657 is an equidigital number, since it uses as much as digits as its factorization.

13323657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441222.

The product of its digits is 11340, while the sum is 30.

The square root of 13323657 is about 3650.1584897097. The cubic root of 13323657 is about 237.0688436085.

Adding to 13323657 its reverse (75632331), we get a palindrome (88955988).

The spelling of 13323657 in words is "thirteen million, three hundred twenty-three thousand, six hundred fifty-seven".