13665914 has 4 divisors (see below), whose sum is σ = 20498874. Its totient is φ = 6832956.

The previous prime is 13665889. The next prime is 13665919. The reversal of 13665914 is 41956631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41956631 = 37 ⋅1133963.

It can be written as a sum of positive squares in only one way, i.e., 8970025 + 4695889 = 2995^2 + 2167^2 .

It is not an unprimeable number, because it can be changed into a prime (13665919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3416477 + ... + 3416480.

Almost surely, 2^13665914 is an apocalyptic number.

13665914 is a deficient number, since it is larger than the sum of its proper divisors (6832960).

13665914 is an equidigital number, since it uses as much as digits as its factorization.

13665914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832959.

The product of its digits is 19440, while the sum is 35.

The square root of 13665914 is about 3696.7437022331. The cubic root of 13665914 is about 239.0816408471.

The spelling of 13665914 in words is "thirteen million, six hundred sixty-five thousand, nine hundred fourteen".