13611513 has 8 divisors (see below), whose sum is σ = 18491328. Its totient is φ = 8903024.

The previous prime is 13611497. The next prime is 13611539. The reversal of 13611513 is 31511631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13611513 - 2⁴ = 13611497 is a prime.

It is a super-2 number, since 2×13611513² = 370546572298338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13611513.

It is not an unprimeable number, because it can be changed into a prime (13611583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42645 + ... + 42962.

It is an arithmetic number, because the mean of its divisors is an integer number (2311416).

Almost surely, 2^13611513 is an apocalyptic number.

It is an amenable number.

13611513 is a deficient number, since it is larger than the sum of its proper divisors (4879815).

13611513 is an equidigital number, since it uses as much as digits as its factorization.

13611513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85663.

The product of its digits is 270, while the sum is 21.

The square root of 13611513 is about 3689.3784029291. The cubic root of 13611513 is about 238.7639751329.

The spelling of 13611513 in words is "thirteen million, six hundred eleven thousand, five hundred thirteen".