167749 has 4 divisors (see below), whose sum is σ = 168640. Its totient is φ = 166860.

The previous prime is 167747. The next prime is 167759. The reversal of 167749 is 947761.

167749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 167749 - 2¹ = 167747 is a prime.

It is a Duffinian number.

167749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39 + ... + 580.

It is an arithmetic number, because the mean of its divisors is an integer number (42160).

2¹⁶⁷⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

167749 is a deficient number, since it is larger than the sum of its proper divisors (891).

167749 is an equidigital number, since it uses as much as digits as its factorization.

167749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its digits is 10584, while the sum is 34.

The square root of 167749 is about 409.5717275399. The cubic root of 167749 is about 55.1509900702.

The spelling of 167749 in words is "one hundred sixty-seven thousand, seven hundred forty-nine".