345686 has 16 divisors (see below), whose sum is σ = 596160. Its totient is φ = 148680.

The previous prime is 345679. The next prime is 345689. The reversal of 345686 is 686543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (37260).

2³⁴⁵⁶⁸⁶ is an apocalyptic number.

345686 is a deficient number, since it is larger than the sum of its proper divisors (250474).

345686 is a wasteful number, since it uses less digits than its factorization.

345686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859.

The product of its digits is 17280, while the sum is 32.

The square root of 345686 is about 587.9506782035. The cubic root of 345686 is about 70.1822461956.

The spelling of 345686 in words is "three hundred forty-five thousand, six hundred eighty-six".