13665712 has 20 divisors (see below), whose sum is σ = 27871480. Its totient is φ = 6473088.

The previous prime is 13665709. The next prime is 13665713. The reversal of 13665712 is 21756631.

It is not an unprimeable number, because it can be changed into a prime (13665713) 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, 22173 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (1393574).

Almost surely, 2^13665712 is an apocalyptic number.

It is an amenable number.

13665712 is an abundant number, since it is smaller than the sum of its proper divisors (14205768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13665712 is a wasteful number, since it uses less digits than its factorization.

13665712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44980 (or 44974 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 13665712 is about 3696.7163807898. The cubic root of 13665712 is about 239.0804628620.

The spelling of 13665712 in words is "thirteen million, six hundred sixty-five thousand, seven hundred twelve".