13668613 has 8 divisors (see below), whose sum is σ = 16125440. Its totient is φ = 11337840.

The previous prime is 13668583. The next prime is 13668631. The reversal of 13668613 is 31686631.

It is a happy number.

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 13668613 - 2⁹ = 13668101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668653) 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, 31278 + ... + 31711.

It is an arithmetic number, because the mean of its divisors is an integer number (2015680).

Almost surely, 2^13668613 is an apocalyptic number.

It is an amenable number.

13668613 is a deficient number, since it is larger than the sum of its proper divisors (2456827).

13668613 is an equidigital number, since it uses as much as digits as its factorization.

13668613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63027.

The product of its digits is 15552, while the sum is 34.

The square root of 13668613 is about 3697.1087352146. The cubic root of 13668613 is about 239.0973792474.

The spelling of 13668613 in words is "thirteen million, six hundred sixty-eight thousand, six hundred thirteen".