13564789 has 8 divisors (see below), whose sum is σ = 15546560. Its totient is φ = 11594016.

The previous prime is 13564729. The next prime is 13564807. The reversal of 13564789 is 98746531.

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

It is not a de Polignac number, because 13564789 - 2¹³ = 13556597 is a prime.

It is a super-2 number, since 2×13564789² = 368007001229042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (1943320).

Almost surely, 2^13564789 is an apocalyptic number.

It is an amenable number.

13564789 is a deficient number, since it is larger than the sum of its proper divisors (1981771).

13564789 is an equidigital number, since it uses as much as digits as its factorization.

13564789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499.

The product of its digits is 181440, while the sum is 43.

The square root of 13564789 is about 3683.0407274425. The cubic root of 13564789 is about 238.4904616402.

The spelling of 13564789 in words is "thirteen million, five hundred sixty-four thousand, seven hundred eighty-nine".