167866 has 4 divisors (see below), whose sum is σ = 251802. Its totient is φ = 83932.

The previous prime is 167863. The next prime is 167873. The reversal of 167866 is 668761.

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

It can be written as a sum of positive squares in only one way, i.e., 119025 + 48841 = 345^2 + 221^2 .

It is not an unprimeable number, because it can be changed into a prime (167861) by changing a digit.

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 as a sum of consecutive naturals, namely, 41965 + ... + 41968.

2¹⁶⁷⁸⁶⁶ is an apocalyptic number.

167866 is a deficient number, since it is larger than the sum of its proper divisors (83936).

167866 is an equidigital number, since it uses as much as digits as its factorization.

167866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83935.

The product of its digits is 12096, while the sum is 34.

The square root of 167866 is about 409.7145347678. The cubic root of 167866 is about 55.1638091556.

The spelling of 167866 in words is "one hundred sixty-seven thousand, eight hundred sixty-six".