13166881 has 16 divisors (see below), whose sum is σ = 16297344. Its totient is φ = 10358784.

The previous prime is 13166861. The next prime is 13166887. The reversal of 13166881 is 18866131.

It is a cyclic number.

It is not a de Polignac number, because 13166881 - 2⁹ = 13166369 is a prime.

It is a super-2 number, since 2×13166881² = 346733510536322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13166887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23106 + ... + 23668.

It is an arithmetic number, because the mean of its divisors is an integer number (1018584).

Almost surely, 2^13166881 is an apocalyptic number.

It is an amenable number.

13166881 is a deficient number, since it is larger than the sum of its proper divisors (3130463).

13166881 is a wasteful number, since it uses less digits than its factorization.

13166881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its digits is 6912, while the sum is 34.

The square root of 13166881 is about 3628.6197100275. The cubic root of 13166881 is about 236.1353300719.

The spelling of 13166881 in words is "thirteen million, one hundred sixty-six thousand, eight hundred eighty-one".