2805564606 has 64 divisors (see below), whose sum is σ = 6106356480. Its totient is φ = 859304160.

The previous prime is 2805564581. The next prime is 2805564607. The reversal of 2805564606 is 6064655082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805564607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4362921 + ... + 4363563.

It is an arithmetic number, because the mean of its divisors is an integer number (95411820).

Almost surely, 2^2805564606 is an apocalyptic number.

2805564606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2805564606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3053178240).

2805564606 is an abundant number, since it is smaller than the sum of its proper divisors (3300791874).

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

2805564606 is a wasteful number, since it uses less digits than its factorization.

2805564606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 2805564606 is about 52967.5807074478. The cubic root of 2805564606 is about 1410.3928295335.

The spelling of 2805564606 in words is "two billion, eight hundred five million, five hundred sixty-four thousand, six hundred six".