13661033 has 2 divisors, whose sum is σ = 13661034. Its totient is φ = 13661032.

The previous prime is 13661017. The next prime is 13661071. The reversal of 13661033 is 33016631.

13661033 is digitally balanced in base 2 and base 3, because in such bases 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., 11202409 + 2458624 = 3347^2 + 1568^2 .

It is a cyclic number.

It is not a de Polignac number, because 13661033 - 2⁴ = 13661017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13661003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6830516 + 6830517.

It is an arithmetic number, because the mean of its divisors is an integer number (6830517).

Almost surely, 2^13661033 is an apocalyptic number.

It is an amenable number.

13661033 is a deficient number, since it is larger than the sum of its proper divisors (1).

13661033 is an equidigital number, since it uses as much as digits as its factorization.

13661033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 13661033 is about 3696.0834676722. The cubic root of 13661033 is about 239.0531735123.

Adding to 13661033 its reverse (33016631), we get a palindrome (46677664).

The spelling of 13661033 in words is "thirteen million, six hundred sixty-one thousand, thirty-three".