90661033 has 2 divisors, whose sum is σ = 90661034. Its totient is φ = 90661032.

The previous prime is 90661001. The next prime is 90661057. The reversal of 90661033 is 33016609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55175184 + 35485849 = 7428^2 + 5957^2 .

It is a cyclic number.

It is not a de Polignac number, because 90661033 - 2⁵ = 90661001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90660992 and 90661010.

It is not a weakly prime, because it can be changed into another prime (90661093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45330516 + 45330517.

It is an arithmetic number, because the mean of its divisors is an integer number (45330517).

Almost surely, 2^90661033 is an apocalyptic number.

It is an amenable number.

90661033 is a deficient number, since it is larger than the sum of its proper divisors (1).

90661033 is an equidigital number, since it uses as much as digits as its factorization.

90661033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 90661033 is about 9521.6087401237. The cubic root of 90661033 is about 449.2349684425.

The spelling of 90661033 in words is "ninety million, six hundred sixty-one thousand, thirty-three".