814213866 has 16 divisors (see below), whose sum is σ = 1633568544. Its totient is φ = 270547824.

The previous prime is 814213849. The next prime is 814213913. The reversal of 814213866 is 668312418.

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, 212140 + ... + 215943.

It is an arithmetic number, because the mean of its divisors is an integer number (102098034).

Almost surely, 2^814213866 is an apocalyptic number.

814213866 is an abundant number, since it is smaller than the sum of its proper divisors (819354678).

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

814213866 is a wasteful number, since it uses less digits than its factorization.

814213866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428405.

The product of its digits is 55296, while the sum is 39.

The square root of 814213866 is about 28534.4329889346. The cubic root of 814213866 is about 933.7834334428.

The spelling of 814213866 in words is "eight hundred fourteen million, two hundred thirteen thousand, eight hundred sixty-six".