89665033 has 2 divisors, whose sum is σ = 89665034. Its totient is φ = 89665032.

The previous prime is 89665031. The next prime is 89665061. The reversal of 89665033 is 33056698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80227849 + 9437184 = 8957^2 + 3072^2 .

It is a cyclic number.

It is not a de Polignac number, because 89665033 - 2¹ = 89665031 is a prime.

Together with 89665031, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89665031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44832516 + 44832517.

It is an arithmetic number, because the mean of its divisors is an integer number (44832517).

Almost surely, 2^89665033 is an apocalyptic number.

It is an amenable number.

89665033 is a deficient number, since it is larger than the sum of its proper divisors (1).

89665033 is an equidigital number, since it uses as much as digits as its factorization.

89665033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 89665033 is about 9469.1622121495. The cubic root of 89665033 is about 447.5838121058.

The spelling of 89665033 in words is "eighty-nine million, six hundred sixty-five thousand, thirty-three".