361686 has 16 divisors (see below), whose sum is σ = 779184. Its totient is φ = 111264.

The previous prime is 361679. The next prime is 361687. The reversal of 361686 is 686163.

It is a nialpdrome in base 13.

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 361686.

It is not an unprimeable number, because it can be changed into a prime (361687) by changing a digit.

361686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2241 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (48699).

2³⁶¹⁶⁸⁶ is an apocalyptic number.

361686 is an abundant number, since it is smaller than the sum of its proper divisors (417498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361686 is a wasteful number, since it uses less digits than its factorization.

361686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655.

The product of its digits is 5184, while the sum is 30.

The square root of 361686 is about 601.4033588200. The cubic root of 361686 is about 71.2487472848.

The spelling of 361686 in words is "three hundred sixty-one thousand, six hundred eighty-six".