685853206 has 4 divisors (see below), whose sum is σ = 1028779812. Its totient is φ = 342926602.

The previous prime is 685853197. The next prime is 685853209. The reversal of 685853206 is 602358586.

It is a happy number.

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

It is a super-3 number, since 3×685853206³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685853209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171463300 + ... + 171463303.

It is an arithmetic number, because the mean of its divisors is an integer number (257194953).

Almost surely, 2^685853206 is an apocalyptic number.

685853206 is a deficient number, since it is larger than the sum of its proper divisors (342926606).

685853206 is a wasteful number, since it uses less digits than its factorization.

685853206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342926605.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 685853206 is about 26188.7992470063. The cubic root of 685853206 is about 881.8818226664.

The spelling of 685853206 in words is "six hundred eighty-five million, eight hundred fifty-three thousand, two hundred six".