980565 has 8 divisors (see below), whose sum is σ = 1568928. Its totient is φ = 522960.

The previous prime is 980557. The next prime is 980579. The reversal of 980565 is 565089.

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

It is not a de Polignac number, because 980565 - 2³ = 980557 is a prime.

It is a Curzon number.

980565 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 980565.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32671 + ... + 32700.

It is an arithmetic number, because the mean of its divisors is an integer number (196116).

2⁹⁸⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

980565 is a deficient number, since it is larger than the sum of its proper divisors (588363).

980565 is a wasteful number, since it uses less digits than its factorization.

980565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65379.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 980565 is about 990.2348206360. The cubic root of 980565 is about 99.3479238761.

It can be divided in two parts, 9805 and 65, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 980565 in words is "nine hundred eighty thousand, five hundred sixty-five".