168136 has 8 divisors (see below), whose sum is σ = 315270. Its totient is φ = 84064.

The previous prime is 168127. The next prime is 168143. The reversal of 168136 is 631861.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 36 = 410^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 168136.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501 + ... + 10516.

2¹⁶⁸¹³⁶ is an apocalyptic number.

It is an amenable number.

168136 is a deficient number, since it is larger than the sum of its proper divisors (147134).

168136 is a wasteful number, since it uses less digits than its factorization.

168136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21023 (or 21019 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 168136 is about 410.0439000888. The cubic root of 168136 is about 55.1933689437.

Adding to 168136 its reverse (631861), we get a palindrome (799997).

It can be divided in two parts, 1681 and 36, that multiplied together give a square (60516 = 246²).

The spelling of 168136 in words is "one hundred sixty-eight thousand, one hundred thirty-six".