13329644 has 6 divisors (see below), whose sum is σ = 23326884. Its totient is φ = 6664820.

The previous prime is 13329637. The next prime is 13329653. The reversal of 13329644 is 44692331.

It is a self number, because there is not a number n which added to its sum of digits gives 13329644.

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, 1666202 + ... + 1666209.

It is an arithmetic number, because the mean of its divisors is an integer number (3887814).

Almost surely, 2^13329644 is an apocalyptic number.

It is an amenable number.

13329644 is a deficient number, since it is larger than the sum of its proper divisors (9997240).

13329644 is a wasteful number, since it uses less digits than its factorization.

13329644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332415 (or 3332413 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 13329644 is about 3650.9784989780. The cubic root of 13329644 is about 237.1043473401.

The spelling of 13329644 in words is "thirteen million, three hundred twenty-nine thousand, six hundred forty-four".