167845 has 4 divisors (see below), whose sum is σ = 201420. Its totient is φ = 134272.

The previous prime is 167809. The next prime is 167861. The reversal of 167845 is 548761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31684 + 136161 = 178^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 167845 - 2¹⁵ = 135077 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16780 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (50355).

2¹⁶⁷⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

167845 is a deficient number, since it is larger than the sum of its proper divisors (33575).

167845 is an equidigital number, since it uses as much as digits as its factorization.

167845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33574.

The product of its digits is 6720, while the sum is 31.

The square root of 167845 is about 409.6889063668. The cubic root of 167845 is about 55.1615087328.

The spelling of 167845 in words is "one hundred sixty-seven thousand, eight hundred forty-five".