105606489 has 8 divisors (see below), whose sum is σ = 142591360. Its totient is φ = 69512976.

The previous prime is 105606463. The next prime is 105606497. The reversal of 105606489 is 984606501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105606489 - 2²¹ = 103509337 is a prime.

It is a super-2 number, since 2×105606489² = 22305461037814242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105606419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222562 + ... + 223035.

It is an arithmetic number, because the mean of its divisors is an integer number (17823920).

Almost surely, 2^105606489 is an apocalyptic number.

It is an amenable number.

105606489 is a deficient number, since it is larger than the sum of its proper divisors (36984871).

105606489 is an equidigital number, since it uses as much as digits as its factorization.

105606489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445679.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 105606489 is about 10276.5017880600. The cubic root of 105606489 is about 472.6759815910.

The spelling of 105606489 in words is "one hundred five million, six hundred six thousand, four hundred eighty-nine".