90569263 has 2 divisors, whose sum is σ = 90569264. Its totient is φ = 90569262.

The previous prime is 90569231. The next prime is 90569267. The reversal of 90569263 is 36296509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90569263 - 2⁵ = 90569231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90569267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45284631 + 45284632.

It is an arithmetic number, because the mean of its divisors is an integer number (45284632).

Almost surely, 2^90569263 is an apocalyptic number.

90569263 is a deficient number, since it is larger than the sum of its proper divisors (1).

90569263 is an equidigital number, since it uses as much as digits as its factorization.

90569263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 90569263 is about 9516.7884814154. The cubic root of 90569263 is about 449.0833405979.

The spelling of 90569263 in words is "ninety million, five hundred sixty-nine thousand, two hundred sixty-three".