90066841 has 2 divisors, whose sum is σ = 90066842. Its totient is φ = 90066840.

The previous prime is 90066839. The next prime is 90066877. The reversal of 90066841 is 14866009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 17816841 = 8500^2 + 4221^2 .

It is a cyclic number.

It is not a de Polignac number, because 90066841 - 2¹ = 90066839 is a prime.

It is a super-2 number, since 2×90066841² = 16224071695438562, which contains 22 as substring.

Together with 90066839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 90066797 and 90066806.

It is not a weakly prime, because it can be changed into another prime (90066881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45033420 + 45033421.

It is an arithmetic number, because the mean of its divisors is an integer number (45033421).

Almost surely, 2^90066841 is an apocalyptic number.

It is an amenable number.

90066841 is a deficient number, since it is larger than the sum of its proper divisors (1).

90066841 is an equidigital number, since it uses as much as digits as its factorization.

90066841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 90066841 is about 9490.3551566841. The cubic root of 90066841 is about 448.2513885264.

The spelling of 90066841 in words is "ninety million, sixty-six thousand, eight hundred forty-one".