13120566 has 32 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 4093056.

The previous prime is 13120561. The next prime is 13120573. The reversal of 13120566 is 66502131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120561) 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, 31105 + ... + 31523.

It is an arithmetic number, because the mean of its divisors is an integer number (873180).

Almost surely, 2^13120566 is an apocalyptic number.

13120566 is an abundant number, since it is smaller than the sum of its proper divisors (14821194).

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

13120566 is a wasteful number, since it uses less digits than its factorization.

13120566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13120566 is about 3622.2321847170. The cubic root of 13120566 is about 235.8581331604.

Adding to 13120566 its reverse (66502131), we get a palindrome (79622697).

The spelling of 13120566 in words is "thirteen million, one hundred twenty thousand, five hundred sixty-six".