866053814 has 32 divisors (see below), whose sum is σ = 1407144960. Its totient is φ = 399624576.

The previous prime is 866053807. The next prime is 866053843. The reversal of 866053814 is 418350668.

It is a congruent number.

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, 519947 + ... + 521609.

It is an arithmetic number, because the mean of its divisors is an integer number (43973280).

Almost surely, 2^866053814 is an apocalyptic number.

866053814 is a deficient number, since it is larger than the sum of its proper divisors (541091146).

866053814 is a wasteful number, since it uses less digits than its factorization.

866053814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 866053814 is about 29428.7922620008. The cubic root of 866053814 is about 953.1947160457.

The spelling of 866053814 in words is "eight hundred sixty-six million, fifty-three thousand, eight hundred fourteen".