13564469 has 4 divisors (see below), whose sum is σ = 13581120. Its totient is φ = 13547820.

The previous prime is 13564433. The next prime is 13564471. The reversal of 13564469 is 96446531.

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-13564469 is a prime.

It is a super-2 number, since 2×13564469² = 367989638503922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564409) 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, 7037 + ... + 8754.

It is an arithmetic number, because the mean of its divisors is an integer number (3395280).

Almost surely, 2^13564469 is an apocalyptic number.

It is an amenable number.

13564469 is a deficient number, since it is larger than the sum of its proper divisors (16651).

13564469 is an equidigital number, since it uses as much as digits as its factorization.

13564469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650.

The product of its digits is 77760, while the sum is 38.

The square root of 13564469 is about 3682.9972848212. The cubic root of 13564469 is about 238.4885862566.

The spelling of 13564469 in words is "thirteen million, five hundred sixty-four thousand, four hundred sixty-nine".