609686 has 32 divisors (see below), whose sum is σ = 1181952. Its totient is φ = 228960.

The previous prime is 609683. The next prime is 609701. The reversal of 609686 is 686906.

609686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5645 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (36936).

2⁶⁰⁹⁶⁸⁶ is an apocalyptic number.

609686 is a deficient number, since it is larger than the sum of its proper divisors (572266).

609686 is a wasteful number, since it uses less digits than its factorization.

609686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 609686 is about 780.8239238138. The cubic root of 609686 is about 84.7947064157.

The spelling of 609686 in words is "six hundred nine thousand, six hundred eighty-six".