13613575 has 6 divisors (see below), whose sum is σ = 16880864. Its totient is φ = 10890840.

The previous prime is 13613569. The next prime is 13613581. The reversal of 13613575 is 57531631.

It is an interprime number because it is at equal distance from previous prime (13613569) and next prime (13613581).

It is a de Polignac number, because none of the positive numbers 2^k-13613575 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

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, 272247 + ... + 272296.

Almost surely, 2^13613575 is an apocalyptic number.

13613575 is a deficient number, since it is larger than the sum of its proper divisors (3267289).

13613575 is an equidigital number, since it uses as much as digits as its factorization.

13613575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544553 (or 544548 counting only the distinct ones).

The product of its digits is 9450, while the sum is 31.

The square root of 13613575 is about 3689.6578432153. The cubic root of 13613575 is about 238.7760312616.

The spelling of 13613575 in words is "thirteen million, six hundred thirteen thousand, five hundred seventy-five".