158634 has 24 divisors (see below), whose sum is σ = 393120. Its totient is φ = 45288.

The previous prime is 158633. The next prime is 158647. The reversal of 158634 is 436851.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 158598 and 158607.

It is not an unprimeable number, because it can be changed into a prime (158633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2¹⁵⁸⁶³⁴ is an apocalyptic number.

158634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

158634 is an abundant number, since it is smaller than the sum of its proper divisors (234486).

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

158634 is a wasteful number, since it uses less digits than its factorization.

158634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1271 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 158634 is about 398.2888399139. The cubic root of 158634 is about 54.1334149632.

It can be divided in two parts, 15 and 8634, that added together give a square (8649 = 93²).

The spelling of 158634 in words is "one hundred fifty-eight thousand, six hundred thirty-four".