2775810066 has 16 divisors (see below), whose sum is σ = 5554272864. Its totient is φ = 924827904.

The previous prime is 2775810043. The next prime is 2775810077. The reversal of 2775810066 is 6600185772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96796 + ... + 122151.

It is an arithmetic number, because the mean of its divisors is an integer number (347142054).

Almost surely, 2^2775810066 is an apocalyptic number.

2775810066 is an abundant number, since it is smaller than the sum of its proper divisors (2778462798).

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

2775810066 is a wasteful number, since it uses less digits than its factorization.

2775810066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221065.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 2775810066 is about 52685.9570094347. The cubic root of 2775810066 is about 1405.3891039513.

The spelling of 2775810066 in words is "two billion, seven hundred seventy-five million, eight hundred ten thousand, sixty-six".