90768361 has 2 divisors, whose sum is σ = 90768362. Its totient is φ = 90768360.

The previous prime is 90768329. The next prime is 90768371. The reversal of 90768361 is 16386709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83612736 + 7155625 = 9144^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 90768361 - 2⁵ = 90768329 is a prime.

It is not a weakly prime, because it can be changed into another prime (90768311) 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, 45384180 + 45384181.

It is an arithmetic number, because the mean of its divisors is an integer number (45384181).

Almost surely, 2^90768361 is an apocalyptic number.

It is an amenable number.

90768361 is a deficient number, since it is larger than the sum of its proper divisors (1).

90768361 is an equidigital number, since it uses as much as digits as its factorization.

90768361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 90768361 is about 9527.2430954605. The cubic root of 90768361 is about 449.4121723825.

The spelling of 90768361 in words is "ninety million, seven hundred sixty-eight thousand, three hundred sixty-one".