2090206566 has 32 divisors (see below), whose sum is σ = 5308462080. Its totient is φ = 597201768.

The previous prime is 2090206561. The next prime is 2090206567. The reversal of 2090206566 is 6656020902.

2090206566 is a `hidden beast` number, since 2 + 0 + 90 + 2 + 0 + 6 + 566 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2090206566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2090206561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2764446 + ... + 2765201.

It is an arithmetic number, because the mean of its divisors is an integer number (165889440).

Almost surely, 2^2090206566 is an apocalyptic number.

2090206566 is an abundant number, since it is smaller than the sum of its proper divisors (3218255514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2090206566 is a wasteful number, since it uses less digits than its factorization.

2090206566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529665 (or 5529659 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2090206566 is about 45718.7769521452. The cubic root of 2090206566 is about 1278.5853850241.

The spelling of 2090206566 in words is "two billion, ninety million, two hundred six thousand, five hundred sixty-six".