105610989 has 8 divisors (see below), whose sum is σ = 153616032. Its totient is φ = 64006640.

The previous prime is 105610937. The next prime is 105610997. The reversal of 105610989 is 989016501.

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

It is a cyclic number.

It is not a de Polignac number, because 105610989 - 2⁷ = 105610861 is a prime.

It is a super-2 number, since 2×105610989² = 22307361995116242, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105610909) 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, 1600134 + ... + 1600199.

It is an arithmetic number, because the mean of its divisors is an integer number (19202004).

Almost surely, 2^105610989 is an apocalyptic number.

It is an amenable number.

105610989 is a deficient number, since it is larger than the sum of its proper divisors (48005043).

105610989 is a wasteful number, since it uses less digits than its factorization.

105610989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200347.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 105610989 is about 10276.7207318288. The cubic root of 105610989 is about 472.6826952306.

The spelling of 105610989 in words is "one hundred five million, six hundred ten thousand, nine hundred eighty-nine".