167609 has 4 divisors (see below), whose sum is σ = 180516. Its totient is φ = 154704.

The previous prime is 167597. The next prime is 167611. The reversal of 167609 is 906761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906761 = 313 ⋅2897.

It can be written as a sum of positive squares in 2 ways, for example, as 60025 + 107584 = 245^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 167609 - 2⁴ = 167593 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (167009) 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, 6434 + ... + 6459.

It is an arithmetic number, because the mean of its divisors is an integer number (45129).

2¹⁶⁷⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

167609 is a deficient number, since it is larger than the sum of its proper divisors (12907).

167609 is a wasteful number, since it uses less digits than its factorization.

167609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 167609 is about 409.4007816309. The cubic root of 167609 is about 55.1356431579.

The spelling of 167609 in words is "one hundred sixty-seven thousand, six hundred nine".