13622165 has 8 divisors (see below), whose sum is σ = 16570968. Its totient is φ = 10748160.

The previous prime is 13622153. The next prime is 13622177. The reversal of 13622165 is 56122631.

It is an interprime number because it is at equal distance from previous prime (13622153) and next prime (13622177).

It can be written as a sum of positive squares in 4 ways, for example, as 3598609 + 10023556 = 1897^2 + 3166^2 .

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

It is not a de Polignac number, because 13622165 - 2⁴ = 13622149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18296 + ... + 19025.

It is an arithmetic number, because the mean of its divisors is an integer number (2071371).

Almost surely, 2^13622165 is an apocalyptic number.

It is an amenable number.

13622165 is a deficient number, since it is larger than the sum of its proper divisors (2948803).

13622165 is an equidigital number, since it uses as much as digits as its factorization.

13622165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37399.

The product of its digits is 2160, while the sum is 26.

The square root of 13622165 is about 3690.8217242235. The cubic root of 13622165 is about 238.8262422913.

Adding to 13622165 its reverse (56122631), we get a palindrome (69744796).

The spelling of 13622165 in words is "thirteen million, six hundred twenty-two thousand, one hundred sixty-five".