2865822666 has 32 divisors (see below), whose sum is σ = 6555626880. Its totient is φ = 818159616.

The previous prime is 2865822647. The next prime is 2865822703. The reversal of 2865822666 is 6662285682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28170 + ... + 80778.

It is an arithmetic number, because the mean of its divisors is an integer number (204863340).

Almost surely, 2^2865822666 is an apocalyptic number.

2865822666 is an abundant number, since it is smaller than the sum of its proper divisors (3689804214).

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

2865822666 is a wasteful number, since it uses less digits than its factorization.

2865822666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53918.

The product of its digits is 3317760, while the sum is 51.

The square root of 2865822666 is about 53533.3789891877. The cubic root of 2865822666 is about 1420.4188848852.

The spelling of 2865822666 in words is "two billion, eight hundred sixty-five million, eight hundred twenty-two thousand, six hundred sixty-six".