13193661 has 24 divisors (see below), whose sum is σ = 19447776. Its totient is φ = 7949760.

The previous prime is 13193623. The next prime is 13193669. The reversal of 13193661 is 16639131.

It is not a de Polignac number, because 13193661 - 2⁷ = 13193533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13193669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26626 + ... + 27116.

It is an arithmetic number, because the mean of its divisors is an integer number (810324).

Almost surely, 2^13193661 is an apocalyptic number.

It is an amenable number.

13193661 is a deficient number, since it is larger than the sum of its proper divisors (6254115).

13193661 is a wasteful number, since it uses less digits than its factorization.

13193661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 560 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 13193661 is about 3632.3079439937. The cubic root of 13193661 is about 236.2953128280.

The spelling of 13193661 in words is "thirteen million, one hundred ninety-three thousand, six hundred sixty-one".