13620615 has 8 divisors (see below), whose sum is σ = 21793008. Its totient is φ = 7264320.

The previous prime is 13620601. The next prime is 13620619. The reversal of 13620615 is 51602631.

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

It is not a de Polignac number, because 13620615 - 2⁵ = 13620583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620619) 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, 454006 + ... + 454035.

It is an arithmetic number, because the mean of its divisors is an integer number (2724126).

Almost surely, 2^13620615 is an apocalyptic number.

13620615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13620615 is a deficient number, since it is larger than the sum of its proper divisors (8172393).

13620615 is an equidigital number, since it uses as much as digits as its factorization.

13620615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908049.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13620615 is about 3690.6117379101. The cubic root of 13620615 is about 238.8171836550.

The spelling of 13620615 in words is "thirteen million, six hundred twenty thousand, six hundred fifteen".