806666814 has 24 divisors (see below), whose sum is σ = 1749732192. Its totient is φ = 268588320.

The previous prime is 806666771. The next prime is 806666857. The reversal of 806666814 is 418666608.

It is an interprime number because it is at equal distance from previous prime (806666771) and next prime (806666857).

It is a super-2 number, since 2×806666814² = 1301422697617821192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 806666814.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8199 + ... + 40994.

It is an arithmetic number, because the mean of its divisors is an integer number (72905508).

Almost surely, 2^806666814 is an apocalyptic number.

806666814 is an abundant number, since it is smaller than the sum of its proper divisors (943065378).

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

806666814 is a wasteful number, since it uses less digits than its factorization.

806666814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50112 (or 50109 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 806666814 is about 28401.8804659128. The cubic root of 806666814 is about 930.8893538926.

The spelling of 806666814 in words is "eight hundred six million, six hundred sixty-six thousand, eight hundred fourteen".