13317644 has 12 divisors (see below), whose sum is σ = 24319344. Its totient is φ = 6369264.

The previous prime is 13317617. The next prime is 13317649. The reversal of 13317644 is 44671331.

It is not an unprimeable number, because it can be changed into a prime (13317649) 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, 72287 + ... + 72470.

It is an arithmetic number, because the mean of its divisors is an integer number (2026612).

Almost surely, 2^13317644 is an apocalyptic number.

It is an amenable number.

13317644 is a deficient number, since it is larger than the sum of its proper divisors (11001700).

13317644 is a wasteful number, since it uses less digits than its factorization.

13317644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144784 (or 144782 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 13317644 is about 3649.3347338933. The cubic root of 13317644 is about 237.0331749865.

Adding to 13317644 its reverse (44671331), we get a palindrome (57988975).

The spelling of 13317644 in words is "thirteen million, three hundred seventeen thousand, six hundred forty-four".