13659081 has 8 divisors (see below), whose sum is σ = 19170720. Its totient is φ = 8626752.

The previous prime is 13659077. The next prime is 13659083. The reversal of 13659081 is 18095631.

13659081 is digitally balanced in base 2 and base 4, because in such bases 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 13659081 - 2² = 13659077 is a prime.

It is a super-2 number, since 2×13659081² = 373140987529122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13659083) 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, 119760 + ... + 119873.

It is an arithmetic number, because the mean of its divisors is an integer number (2396340).

Almost surely, 2^13659081 is an apocalyptic number.

It is an amenable number.

13659081 is a deficient number, since it is larger than the sum of its proper divisors (5511639).

13659081 is a wasteful number, since it uses less digits than its factorization.

13659081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239655.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13659081 is about 3695.8193949380. The cubic root of 13659081 is about 239.0417870131.

The spelling of 13659081 in words is "thirteen million, six hundred fifty-nine thousand, eighty-one".