13440666 has 8 divisors (see below), whose sum is σ = 26881344. Its totient is φ = 4480220.

The previous prime is 13440653. The next prime is 13440677. The reversal of 13440666 is 66604431.

13440666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

13440666 is an admirable 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, 1120050 + ... + 1120061.

It is an arithmetic number, because the mean of its divisors is an integer number (3360168).

Almost surely, 2^13440666 is an apocalyptic number.

13440666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13440666 is a wasteful number, since it uses less digits than its factorization.

13440666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240116.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 13440666 is about 3666.1513880362. The cubic root of 13440666 is about 237.7608052798.

The spelling of 13440666 in words is "thirteen million, four hundred forty thousand, six hundred sixty-six".