13863644 has 6 divisors (see below), whose sum is σ = 24261384. Its totient is φ = 6931820.

The previous prime is 13863623. The next prime is 13863659. The reversal of 13863644 is 44636831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1732952 + ... + 1732959.

It is an arithmetic number, because the mean of its divisors is an integer number (4043564).

Almost surely, 2^13863644 is an apocalyptic number.

It is an amenable number.

13863644 is a deficient number, since it is larger than the sum of its proper divisors (10397740).

13863644 is a wasteful number, since it uses less digits than its factorization.

13863644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465915 (or 3465913 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 13863644 is about 3723.3914647805. The cubic root of 13863644 is about 240.2292023362.

The spelling of 13863644 in words is "thirteen million, eight hundred sixty-three thousand, six hundred forty-four".