13644797 has 8 divisors (see below), whose sum is σ = 14045400. Its totient is φ = 13249600.

The previous prime is 13644781. The next prime is 13644809. The reversal of 13644797 is 79744631.

It can be written as a sum of positive squares in 4 ways, for example, as 10310521 + 3334276 = 3211^2 + 1826^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13644797 - 2⁴ = 13644781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4079 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (1755675).

Almost surely, 2^13644797 is an apocalyptic number.

It is an amenable number.

13644797 is a deficient number, since it is larger than the sum of its proper divisors (400603).

13644797 is a wasteful number, since it uses less digits than its factorization.

13644797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703.

The product of its digits is 127008, while the sum is 41.

The square root of 13644797 is about 3693.8864357205. The cubic root of 13644797 is about 238.9584318736.

It can be divided in two parts, 13644 and 797, that added together give a palindrome (14441).

The spelling of 13644797 in words is "thirteen million, six hundred forty-four thousand, seven hundred ninety-seven".