13638622 has 8 divisors (see below), whose sum is σ = 20593872. Its totient is φ = 6774000.

The previous prime is 13638593. The next prime is 13638623. The reversal of 13638622 is 22683631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13638623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22279 + ... + 22882.

It is an arithmetic number, because the mean of its divisors is an integer number (2574234).

Almost surely, 2^13638622 is an apocalyptic number.

13638622 is a deficient number, since it is larger than the sum of its proper divisors (6955250).

13638622 is a wasteful number, since it uses less digits than its factorization.

13638622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45314.

The product of its digits is 10368, while the sum is 31.

The square root of 13638622 is about 3693.0505006024. The cubic root of 13638622 is about 238.9223792800.

The spelling of 13638622 in words is "thirteen million, six hundred thirty-eight thousand, six hundred twenty-two".