13669637 has 4 divisors (see below), whose sum is σ = 13691040. Its totient is φ = 13648236.

The previous prime is 13669631. The next prime is 13669639. The reversal of 13669637 is 73696631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13669637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13669594 and 13669603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13669631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713 + ... + 11030.

It is an arithmetic number, because the mean of its divisors is an integer number (3422760).

Almost surely, 2^13669637 is an apocalyptic number.

It is an amenable number.

13669637 is a deficient number, since it is larger than the sum of its proper divisors (21403).

13669637 is an equidigital number, since it uses as much as digits as its factorization.

13669637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402.

The product of its digits is 122472, while the sum is 41.

The square root of 13669637 is about 3697.2472192159. The cubic root of 13669637 is about 239.1033498508.

The spelling of 13669637 in words is "thirteen million, six hundred sixty-nine thousand, six hundred thirty-seven".