13479665 has 4 divisors (see below), whose sum is σ = 16175604. Its totient is φ = 10783728.

The previous prime is 13479659. The next prime is 13479677. The reversal of 13479665 is 56697431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3265249 + 10214416 = 1807^2 + 3196^2 .

It is a cyclic number.

It is not a de Polignac number, because 13479665 - 2⁶ = 13479601 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, 1347962 + ... + 1347971.

It is an arithmetic number, because the mean of its divisors is an integer number (4043901).

Almost surely, 2^13479665 is an apocalyptic number.

It is an amenable number.

13479665 is a deficient number, since it is larger than the sum of its proper divisors (2695939).

13479665 is an equidigital number, since it uses as much as digits as its factorization.

13479665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695938.

The product of its digits is 136080, while the sum is 41.

The square root of 13479665 is about 3671.4663283217. The cubic root of 13479665 is about 237.9905429004.

The spelling of 13479665 in words is "thirteen million, four hundred seventy-nine thousand, six hundred sixty-five".