2805876866 has 16 divisors (see below), whose sum is σ = 4562593728. Its totient is φ = 1286442000.

The previous prime is 2805876823. The next prime is 2805876883. The reversal of 2805876866 is 6686785082.

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, 353420 + ... + 361271.

It is an arithmetic number, because the mean of its divisors is an integer number (285162108).

Almost surely, 2^2805876866 is an apocalyptic number.

2805876866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2805876866 is a deficient number, since it is larger than the sum of its proper divisors (1756716862).

2805876866 is a wasteful number, since it uses less digits than its factorization.

2805876866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714857.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The square root of 2805876866 is about 52970.5282775243. The cubic root of 2805876866 is about 1410.4451532768.

The spelling of 2805876866 in words is "two billion, eight hundred five million, eight hundred seventy-six thousand, eight hundred sixty-six".