13745644 has 12 divisors (see below), whose sum is σ = 26241768. Its totient is φ = 6248000.

The previous prime is 13745629. The next prime is 13745647. The reversal of 13745644 is 44654731.

It is not an unprimeable number, because it can be changed into a prime (13745647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156157 + ... + 156244.

It is an arithmetic number, because the mean of its divisors is an integer number (2186814).

Almost surely, 2^13745644 is an apocalyptic number.

It is an amenable number.

13745644 is a deficient number, since it is larger than the sum of its proper divisors (12496124).

13745644 is a wasteful number, since it uses less digits than its factorization.

13745644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312416 (or 312414 counting only the distinct ones).

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

The square root of 13745644 is about 3707.5118341011. The cubic root of 13745644 is about 239.5456914843.

The spelling of 13745644 in words is "thirteen million, seven hundred forty-five thousand, six hundred forty-four".