13407665 has 4 divisors (see below), whose sum is σ = 16089204. Its totient is φ = 10726128.

The previous prime is 13407659. The next prime is 13407671. The reversal of 13407665 is 56670431.

13407665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56670431 = 43 ⋅1317917.

It is an interprime number because it is at equal distance from previous prime (13407659) and next prime (13407671).

It can be written as a sum of positive squares in 2 ways, for example, as 10445824 + 2961841 = 3232^2 + 1721^2 .

It is a cyclic number.

It is not a de Polignac number, because 13407665 - 2⁶ = 13407601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340762 + ... + 1340771.

It is an arithmetic number, because the mean of its divisors is an integer number (4022301).

Almost surely, 2^13407665 is an apocalyptic number.

It is an amenable number.

13407665 is a deficient number, since it is larger than the sum of its proper divisors (2681539).

13407665 is an equidigital number, since it uses as much as digits as its factorization.

13407665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681538.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 13407665 is about 3661.6478530847. The cubic root of 13407665 is about 237.5660536496.

The spelling of 13407665 in words is "thirteen million, four hundred seven thousand, six hundred sixty-five".