145686 has 8 divisors (see below), whose sum is σ = 291384. Its totient is φ = 48560.

The previous prime is 145681. The next prime is 145687. The reversal of 145686 is 686541.

It is a sphenic number, since it is the product of 3 distinct primes.

145686 is an admirable number.

It is a d-powerful number, because it can be written as 1 + 4⁸ + 6³ + 5⁷ + 8³ + 6⁴ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12135 + ... + 12146.

It is an arithmetic number, because the mean of its divisors is an integer number (36423).

2¹⁴⁵⁶⁸⁶ is an apocalyptic number.

145686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145686 is a wasteful number, since it uses less digits than its factorization.

145686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24286.

The product of its digits is 5760, while the sum is 30.

The square root of 145686 is about 381.6883545512. The cubic root of 145686 is about 52.6185980970.

The spelling of 145686 in words is "one hundred forty-five thousand, six hundred eighty-six".