13335661 has 2 divisors, whose sum is σ = 13335662. Its totient is φ = 13335660.

The previous prime is 13335643. The next prime is 13335683. The reversal of 13335661 is 16653331.

13335661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 447561 = 3590^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 13335661 - 2⁷ = 13335533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13335601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6667830 + 6667831.

It is an arithmetic number, because the mean of its divisors is an integer number (6667831).

Almost surely, 2^13335661 is an apocalyptic number.

It is an amenable number.

13335661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13335661 is an equidigital number, since it uses as much as digits as its factorization.

13335661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 13335661 is about 3651.8024316767. The cubic root of 13335661 is about 237.1400182664.

Adding to 13335661 its reverse (16653331), we get a palindrome (29988992).

The spelling of 13335661 in words is "thirteen million, three hundred thirty-five thousand, six hundred sixty-one".