13743665 has 8 divisors (see below), whose sum is σ = 17761128. Its totient is φ = 10149120.

The previous prime is 13743661. The next prime is 13743731. The reversal of 13743665 is 56634731.

13743665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 559504 + 13184161 = 748^2 + 3631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13743665 - 2² = 13743661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13743661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105656 + ... + 105785.

It is an arithmetic number, because the mean of its divisors is an integer number (2220141).

Almost surely, 2^13743665 is an apocalyptic number.

It is an amenable number.

13743665 is a deficient number, since it is larger than the sum of its proper divisors (4017463).

13743665 is a wasteful number, since it uses less digits than its factorization.

13743665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211459.

The product of its digits is 45360, while the sum is 35.

The square root of 13743665 is about 3707.2449339098. The cubic root of 13743665 is about 239.5341949046.

The spelling of 13743665 in words is "thirteen million, seven hundred forty-three thousand, six hundred sixty-five".