13644574 has 8 divisors (see below), whose sum is σ = 21670848. Its totient is φ = 6420960.

The previous prime is 13644571. The next prime is 13644577. The reversal of 13644574 is 47544631.

It is an interprime number because it is at equal distance from previous prime (13644571) and next prime (13644577).

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 401311 = 13644574 / (1 + 3 + 6 + 4 + 4 + 5 + 7 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200622 + ... + 200689.

It is an arithmetic number, because the mean of its divisors is an integer number (2708856).

Almost surely, 2^13644574 is an apocalyptic number.

13644574 is a deficient number, since it is larger than the sum of its proper divisors (8026274).

13644574 is a wasteful number, since it uses less digits than its factorization.

13644574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401330.

The product of its digits is 40320, while the sum is 34.

The square root of 13644574 is about 3693.8562505869. The cubic root of 13644574 is about 238.9571300827.

The spelling of 13644574 in words is "thirteen million, six hundred forty-four thousand, five hundred seventy-four".