13545666 has 24 divisors (see below), whose sum is σ = 30625920. Its totient is φ = 4318776.

The previous prime is 13545647. The next prime is 13545691. The reversal of 13545666 is 66654531.

It is a self number, because there is not a number n which added to its sum of digits gives 13545666.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 15946 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (1276080).

Almost surely, 2^13545666 is an apocalyptic number.

13545666 is an abundant number, since it is smaller than the sum of its proper divisors (17080254).

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

13545666 is a wasteful number, since it uses less digits than its factorization.

13545666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32750 (or 32747 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 13545666 is about 3680.4437232486. The cubic root of 13545666 is about 238.3783380653.

The spelling of 13545666 in words is "thirteen million, five hundred forty-five thousand, six hundred sixty-six".