13661233 has 16 divisors (see below), whose sum is σ = 14688000. Its totient is φ = 12684672.

The previous prime is 13661231. The next prime is 13661237. The reversal of 13661233 is 33216631.

13661233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13661233 - 2¹ = 13661231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13661198 and 13661207.

It is not an unprimeable number, because it can be changed into a prime (13661231) 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, 153453 + ... + 153541.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^13661233 is an apocalyptic number.

It is an amenable number.

13661233 is a deficient number, since it is larger than the sum of its proper divisors (1026767).

13661233 is an equidigital number, since it uses as much as digits as its factorization.

13661233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 1944, while the sum is 25.

The square root of 13661233 is about 3696.1105232393. The cubic root of 13661233 is about 239.0543401005.

Adding to 13661233 its reverse (33216631), we get a palindrome (46877864).

The spelling of 13661233 in words is "thirteen million, six hundred sixty-one thousand, two hundred thirty-three".