168634 has 4 divisors (see below), whose sum is σ = 252954. Its totient is φ = 84316.

The previous prime is 168631. The next prime is 168643. The reversal of 168634 is 436861.

168634 is nontrivially palindromic in base 14.

168634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

168634 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436861 = 307 ⋅1423.

It can be written as a sum of positive squares in only one way, i.e., 157609 + 11025 = 397^2 + 105^2 .

It is not an unprimeable number, because it can be changed into a prime (168631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42157 + ... + 42160.

2¹⁶⁸⁶³⁴ is an apocalyptic number.

168634 is a deficient number, since it is larger than the sum of its proper divisors (84320).

168634 is an equidigital number, since it uses as much as digits as its factorization.

168634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84319.

The product of its digits is 3456, while the sum is 28.

The square root of 168634 is about 410.6507031529. The cubic root of 168634 is about 55.2478074244.

It can be divided in two parts, 1 and 68634, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 168634 in words is "one hundred sixty-eight thousand, six hundred thirty-four".