2772862666 has 48 divisors (see below), whose sum is σ = 5111942400. Its totient is φ = 1122924768.

The previous prime is 2772862657. The next prime is 2772862669. The reversal of 2772862666 is 6662682772.

It is not an unprimeable number, because it can be changed into a prime (2772862669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123195 + ... + 143953.

It is an arithmetic number, because the mean of its divisors is an integer number (106498800).

Almost surely, 2^2772862666 is an apocalyptic number.

2772862666 is a deficient number, since it is larger than the sum of its proper divisors (2339079734).

2772862666 is a wasteful number, since it uses less digits than its factorization.

2772862666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20851 (or 20844 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The square root of 2772862666 is about 52657.9781799491. The cubic root of 2772862666 is about 1404.8915061675.

The spelling of 2772862666 in words is "two billion, seven hundred seventy-two million, eight hundred sixty-two thousand, six hundred sixty-six".