13666374 has 16 divisors (see below), whose sum is σ = 30369840. Its totient is φ = 4555440.

The previous prime is 13666369. The next prime is 13666391. The reversal of 13666374 is 47366631.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126487 + ... + 126594.

It is an arithmetic number, because the mean of its divisors is an integer number (1898115).

Almost surely, 2^13666374 is an apocalyptic number.

13666374 is an abundant number, since it is smaller than the sum of its proper divisors (16703466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13666374 is a wasteful number, since it uses less digits than its factorization.

13666374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253092 (or 253086 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 13666374 is about 3696.8059186276. The cubic root of 13666374 is about 239.0843233442.

The spelling of 13666374 in words is "thirteen million, six hundred sixty-six thousand, three hundred seventy-four".