13998613 has 2 divisors, whose sum is σ = 13998614. Its totient is φ = 13998612.

The previous prime is 13998601. The next prime is 13998631. The reversal of 13998613 is 31689931.

13998613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (13998631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13264164 + 734449 = 3642^2 + 857^2 .

It is a cyclic number.

It is not a de Polignac number, because 13998613 - 2¹⁷ = 13867541 is a prime.

It is a super-2 number, since 2×13998613² = 391922331847538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13998653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6999306 + 6999307.

It is an arithmetic number, because the mean of its divisors is an integer number (6999307).

Almost surely, 2^13998613 is an apocalyptic number.

It is an amenable number.

13998613 is a deficient number, since it is larger than the sum of its proper divisors (1).

13998613 is an equidigital number, since it uses as much as digits as its factorization.

13998613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 13998613 is about 3741.4720365118. The cubic root of 13998613 is about 241.0062669468.

The spelling of 13998613 in words is "thirteen million, nine hundred ninety-eight thousand, six hundred thirteen".