13236645 has 16 divisors (see below), whose sum is σ = 21696192. Its totient is φ = 6887040.

The previous prime is 13236637. The next prime is 13236653. The reversal of 13236645 is 54663231.

13236645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13236637) and next prime (13236653).

It is not a de Polignac number, because 13236645 - 2³ = 13236637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10147 + ... + 11376.

It is an arithmetic number, because the mean of its divisors is an integer number (1356012).

Almost surely, 2^13236645 is an apocalyptic number.

13236645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13236645 is a deficient number, since it is larger than the sum of its proper divisors (8459547).

13236645 is a wasteful number, since it uses less digits than its factorization.

13236645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21572.

The product of its digits is 12960, while the sum is 30.

The square root of 13236645 is about 3638.2200318288. The cubic root of 13236645 is about 236.5516457108.

Adding to 13236645 its reverse (54663231), we get a palindrome (67899876).

The spelling of 13236645 in words is "thirteen million, two hundred thirty-six thousand, six hundred forty-five".