13235645 has 6 divisors (see below), whose sum is σ = 15892542. Its totient is φ = 10582008.

The previous prime is 13235633. The next prime is 13235669. The reversal of 13235645 is 54653231.

It can be written as a sum of positive squares in only one way, i.e., 10588516 + 2647129 = 3254^2 + 1627^2 .

It is not a de Polignac number, because 13235645 - 2⁸ = 13235389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7322 + ... + 8948.

It is an arithmetic number, because the mean of its divisors is an integer number (2648757).

Almost surely, 2^13235645 is an apocalyptic number.

It is an amenable number.

13235645 is a deficient number, since it is larger than the sum of its proper divisors (2656897).

13235645 is an frugal number, since it uses more digits than its factorization.

13235645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259 (or 1632 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 13235645 is about 3638.0825993922. The cubic root of 13235645 is about 236.5456885718.

Adding to 13235645 its reverse (54653231), we get a palindrome (67888876).

The spelling of 13235645 in words is "thirteen million, two hundred thirty-five thousand, six hundred forty-five".