13161666 has 16 divisors (see below), whose sum is σ = 30083904. Its totient is φ = 3760464.

The previous prime is 13161601. The next prime is 13161703. The reversal of 13161666 is 66616131.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

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, 156645 + ... + 156728.

It is an arithmetic number, because the mean of its divisors is an integer number (1880244).

Almost surely, 2^13161666 is an apocalyptic number.

13161666 is an abundant number, since it is smaller than the sum of its proper divisors (16922238).

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

13161666 is a wasteful number, since it uses less digits than its factorization.

13161666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313385.

The product of its digits is 3888, while the sum is 30.

The square root of 13161666 is about 3627.9010460596. The cubic root of 13161666 is about 236.1041506209.

Adding to 13161666 its reverse (66616131), we get a palindrome (79777797).

The spelling of 13161666 in words is "thirteen million, one hundred sixty-one thousand, six hundred sixty-six".