13330581 has 8 divisors (see below), whose sum is σ = 19389984. Its totient is φ = 8079120.

The previous prime is 13330579. The next prime is 13330627. The reversal of 13330581 is 18503331.

13330581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13330581 - 2¹ = 13330579 is a prime.

It is a super-2 number, since 2×13330581² = 355408779595122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201946 + ... + 202011.

It is an arithmetic number, because the mean of its divisors is an integer number (2423748).

Almost surely, 2^13330581 is an apocalyptic number.

13330581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13330581 is a deficient number, since it is larger than the sum of its proper divisors (6059403).

13330581 is a wasteful number, since it uses less digits than its factorization.

13330581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403971.

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

The square root of 13330581 is about 3651.1068184867. The cubic root of 13330581 is about 237.1099029165.

It can be divided in two parts, 133305 and 81, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 13330581 in words is "thirteen million, three hundred thirty thousand, five hundred eighty-one".