108928565 has 4 divisors (see below), whose sum is σ = 130714284. Its totient is φ = 87142848.

The previous prime is 108928543. The next prime is 108928579. The reversal of 108928565 is 565829801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71791729 + 37136836 = 8473^2 + 6094^2 .

It is a cyclic number.

It is not a de Polignac number, because 108928565 - 2¹⁰ = 108927541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10892852 + ... + 10892861.

It is an arithmetic number, because the mean of its divisors is an integer number (32678571).

Almost surely, 2^108928565 is an apocalyptic number.

It is an amenable number.

108928565 is a deficient number, since it is larger than the sum of its proper divisors (21785719).

108928565 is an equidigital number, since it uses as much as digits as its factorization.

108928565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21785718.

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 108928565 is about 10436.8848321709. The cubic root of 108928565 is about 477.5812421729.

The spelling of 108928565 in words is "one hundred eight million, nine hundred twenty-eight thousand, five hundred sixty-five".