90648193 has 2 divisors, whose sum is σ = 90648194. Its totient is φ = 90648192.

The previous prime is 90648167. The next prime is 90648203. The reversal of 90648193 is 39184609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58476609 + 32171584 = 7647^2 + 5672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90648193 is a prime.

It is not a weakly prime, because it can be changed into another prime (90648133) 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, 45324096 + 45324097.

It is an arithmetic number, because the mean of its divisors is an integer number (45324097).

Almost surely, 2^90648193 is an apocalyptic number.

It is an amenable number.

90648193 is a deficient number, since it is larger than the sum of its proper divisors (1).

90648193 is an equidigital number, since it uses as much as digits as its factorization.

90648193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 90648193 is about 9520.9344604403. The cubic root of 90648193 is about 449.2137595904.

The spelling of 90648193 in words is "ninety million, six hundred forty-eight thousand, one hundred ninety-three".