90564827 has 2 divisors, whose sum is σ = 90564828. Its totient is φ = 90564826.

The previous prime is 90564821. The next prime is 90564829. The reversal of 90564827 is 72846509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90564827 - 2¹⁶ = 90499291 is a prime.

Together with 90564829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90564821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45282413 + 45282414.

It is an arithmetic number, because the mean of its divisors is an integer number (45282414).

Almost surely, 2^90564827 is an apocalyptic number.

90564827 is a deficient number, since it is larger than the sum of its proper divisors (1).

90564827 is an equidigital number, since it uses as much as digits as its factorization.

90564827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 90564827 is about 9516.5554167461. Note that the first 3 decimals coincide. The cubic root of 90564827 is about 449.0760085805.

The spelling of 90564827 in words is "ninety million, five hundred sixty-four thousand, eight hundred twenty-seven".