90266563 has 2 divisors, whose sum is σ = 90266564. Its totient is φ = 90266562.

The previous prime is 90266557. The next prime is 90266573. The reversal of 90266563 is 36566209.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90266563 is a prime.

It is not a weakly prime, because it can be changed into another prime (90266573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45133281 + 45133282.

It is an arithmetic number, because the mean of its divisors is an integer number (45133282).

Almost surely, 2^90266563 is an apocalyptic number.

90266563 is a deficient number, since it is larger than the sum of its proper divisors (1).

90266563 is an equidigital number, since it uses as much as digits as its factorization.

90266563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 90266563 is about 9500.8716968497. The cubic root of 90266563 is about 448.5824743817.

The spelling of 90266563 in words is "ninety million, two hundred sixty-six thousand, five hundred sixty-three".