108667589 has 4 divisors (see below), whose sum is σ = 111318060. Its totient is φ = 106017120.

The previous prime is 108667541. The next prime is 108667591. The reversal of 108667589 is 985766801.

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: 985766801 = 997 ⋅988733.

It can be written as a sum of positive squares in 2 ways, for example, as 3441025 + 105226564 = 1855^2 + 10258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108667589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108667529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325174 + ... + 1325255.

It is an arithmetic number, because the mean of its divisors is an integer number (27829515).

Almost surely, 2^108667589 is an apocalyptic number.

It is an amenable number.

108667589 is a deficient number, since it is larger than the sum of its proper divisors (2650471).

108667589 is an equidigital number, since it uses as much as digits as its factorization.

108667589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650470.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 108667589 is about 10424.3747534325. The cubic root of 108667589 is about 477.1995335668.

The spelling of 108667589 in words is "one hundred eight million, six hundred sixty-seven thousand, five hundred eighty-nine".