90068369 has 2 divisors, whose sum is σ = 90068370. Its totient is φ = 90068368.

The previous prime is 90068353. The next prime is 90068371. The reversal of 90068369 is 96386009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90022144 + 46225 = 9488^2 + 215^2 .

It is an emirp because it is prime and its reverse (96386009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90068369 - 2⁴ = 90068353 is a prime.

It is a super-2 number, since 2×90068369² = 16224622188640322, which contains 22 as substring.

Together with 90068371, 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 (90068339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45034184 + 45034185.

It is an arithmetic number, because the mean of its divisors is an integer number (45034185).

Almost surely, 2^90068369 is an apocalyptic number.

It is an amenable number.

90068369 is a deficient number, since it is larger than the sum of its proper divisors (1).

90068369 is an equidigital number, since it uses as much as digits as its factorization.

90068369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 90068369 is about 9490.4356591255. The cubic root of 90068369 is about 448.2539234003.

The spelling of 90068369 in words is "ninety million, sixty-eight thousand, three hundred sixty-nine".