13665374 has 4 divisors (see below), whose sum is σ = 20498064. Its totient is φ = 6832686.

The previous prime is 13665371. The next prime is 13665383. The reversal of 13665374 is 47356631.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13665371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3416342 + ... + 3416345.

It is an arithmetic number, because the mean of its divisors is an integer number (5124516).

Almost surely, 2^13665374 is an apocalyptic number.

13665374 is a deficient number, since it is larger than the sum of its proper divisors (6832690).

13665374 is an equidigital number, since it uses as much as digits as its factorization.

13665374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832689.

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

The square root of 13665374 is about 3696.6706642599. The cubic root of 13665374 is about 239.0784917521.

The spelling of 13665374 in words is "thirteen million, six hundred sixty-five thousand, three hundred seventy-four".