90605511 has 6 divisors (see below), whose sum is σ = 130874640. Its totient is φ = 60403668.

The previous prime is 90605503. The next prime is 90605521. The reversal of 90605511 is 11550609.

90605511 is a `hidden beast` number, since 9 + 0 + 605 + 51 + 1 = 666.

It is not a de Polignac number, because 90605511 - 2³ = 90605503 is a prime.

It is a super-2 number, since 2×90605511² = 16418717247142242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90605521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5033631 + ... + 5033648.

It is an arithmetic number, because the mean of its divisors is an integer number (21812440).

Almost surely, 2^90605511 is an apocalyptic number.

90605511 is a deficient number, since it is larger than the sum of its proper divisors (40269129).

90605511 is a wasteful number, since it uses less digits than its factorization.

90605511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067285 (or 10067282 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 90605511 is about 9518.6927148637. The cubic root of 90605511 is about 449.1432439294.

The spelling of 90605511 in words is "ninety million, six hundred five thousand, five hundred eleven".