90605111 has 2 divisors, whose sum is σ = 90605112. Its totient is φ = 90605110.

The previous prime is 90605107. The next prime is 90605113. The reversal of 90605111 is 11150609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90605111 - 2² = 90605107 is a prime.

It is a super-2 number, since 2×90605111² = 16418572278644642, which contains 22 as substring.

Together with 90605113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90605113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45302555 + 45302556.

It is an arithmetic number, because the mean of its divisors is an integer number (45302556).

Almost surely, 2^90605111 is an apocalyptic number.

90605111 is a deficient number, since it is larger than the sum of its proper divisors (1).

90605111 is an equidigital number, since it uses as much as digits as its factorization.

90605111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 90605111 is about 9518.6717035519. The cubic root of 90605111 is about 449.1425829778.

The spelling of 90605111 in words is "ninety million, six hundred five thousand, one hundred eleven".