6699806 has 4 divisors (see below), whose sum is σ = 10049712. Its totient is φ = 3349902.

The previous prime is 6699793. The next prime is 6699817. The reversal of 6699806 is 6089966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6089966 = 2 ⋅3044983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1674950 + ... + 1674953.

It is an arithmetic number, because the mean of its divisors is an integer number (2512428).

Almost surely, 2^6699806 is an apocalyptic number.

6699806 is a deficient number, since it is larger than the sum of its proper divisors (3349906).

6699806 is a wasteful number, since it uses less digits than its factorization.

6699806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349905.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 6699806 is about 2588.3983464683. The cubic root of 6699806 is about 188.5185435348.

The spelling of 6699806 in words is "six million, six hundred ninety-nine thousand, eight hundred six".