13245666 has 16 divisors (see below), whose sum is σ = 30275904. Its totient is φ = 3784464.

The previous prime is 13245647. The next prime is 13245691. The reversal of 13245666 is 66654231.

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 7 ways as a sum of consecutive naturals, for example, 157645 + ... + 157728.

It is an arithmetic number, because the mean of its divisors is an integer number (1892244).

Almost surely, 2^13245666 is an apocalyptic number.

13245666 is an abundant number, since it is smaller than the sum of its proper divisors (17030238).

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

13245666 is a wasteful number, since it uses less digits than its factorization.

13245666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315385.

The product of its digits is 25920, while the sum is 33.

The square root of 13245666 is about 3639.4595752666. The cubic root of 13245666 is about 236.6053715054.

Adding to 13245666 its reverse (66654231), we get a palindrome (79899897).

The spelling of 13245666 in words is "thirteen million, two hundred forty-five thousand, six hundred sixty-six".