158646 has 16 divisors (see below), whose sum is σ = 321264. Its totient is φ = 52224.

The previous prime is 158633. The next prime is 158647. The reversal of 158646 is 646851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158647) by changing a digit.

158646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 918.

It is an arithmetic number, because the mean of its divisors is an integer number (20079).

2¹⁵⁸⁶⁴⁶ is an apocalyptic number.

158646 is an abundant number, since it is smaller than the sum of its proper divisors (162618).

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

158646 is a wasteful number, since it uses less digits than its factorization.

158646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

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

The square root of 158646 is about 398.3039040733. The cubic root of 158646 is about 54.1347799177.

The spelling of 158646 in words is "one hundred fifty-eight thousand, six hundred forty-six".