13456666 has 16 divisors (see below), whose sum is σ = 21012480. Its totient is φ = 6456240.

The previous prime is 13456657. The next prime is 13456687. The reversal of 13456666 is 66665431.

13456666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 10.

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, 7020 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (1313280).

Almost surely, 2^13456666 is an apocalyptic number.

13456666 is a deficient number, since it is larger than the sum of its proper divisors (7555814).

13456666 is a wasteful number, since it uses less digits than its factorization.

13456666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its digits is 77760, while the sum is 37.

The square root of 13456666 is about 3668.3328638497. The cubic root of 13456666 is about 237.8551127187.

The spelling of 13456666 in words is "thirteen million, four hundred fifty-six thousand, six hundred sixty-six".