699806 has 4 divisors (see below), whose sum is σ = 1049712. Its totient is φ = 349902.

The previous prime is 699793. The next prime is 699817. The reversal of 699806 is 608996.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 699806.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699806.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174950 + ... + 174953.

It is an arithmetic number, because the mean of its divisors is an integer number (262428).

2⁶⁹⁹⁸⁰⁶ is an apocalyptic number.

699806 is a deficient number, since it is larger than the sum of its proper divisors (349906).

699806 is a wasteful number, since it uses less digits than its factorization.

699806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349905.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 699806 is about 836.5440813251. The cubic root of 699806 is about 88.7821968747.

The spelling of 699806 in words is "six hundred ninety-nine thousand, eight hundred six".