13565745 has 64 divisors (see below), whose sum is σ = 26749440. Its totient is φ = 6488064.

The previous prime is 13565743. The next prime is 13565749. The reversal of 13565745 is 54756531.

13565745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13565745 - 2¹ = 13565743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13565743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52657 + ... + 52913.

It is an arithmetic number, because the mean of its divisors is an integer number (417960).

Almost surely, 2^13565745 is an apocalyptic number.

13565745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13565745 is a deficient number, since it is larger than the sum of its proper divisors (13183695).

13565745 is a wasteful number, since it uses less digits than its factorization.

13565745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 305 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 13565745 is about 3683.1705092216. The cubic root of 13565745 is about 238.4960641730.

The spelling of 13565745 in words is "thirteen million, five hundred sixty-five thousand, seven hundred forty-five".