978585 has 8 divisors (see below), whose sum is σ = 1565760. Its totient is φ = 521904.

The previous prime is 978569. The next prime is 978599. The reversal of 978585 is 585879.

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

It is not a de Polignac number, because 978585 - 2⁴ = 978569 is a prime.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978585.

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, 32605 + ... + 32634.

It is an arithmetic number, because the mean of its divisors is an integer number (195720).

2⁹⁷⁸⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

978585 is a deficient number, since it is larger than the sum of its proper divisors (587175).

978585 is a wasteful number, since it uses less digits than its factorization.

978585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65247.

The product of its digits is 100800, while the sum is 42.

The square root of 978585 is about 989.2345525708. The cubic root of 978585 is about 99.2810095838.

It can be divided in two parts, 9785 and 85, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 978585 in words is "nine hundred seventy-eight thousand, five hundred eighty-five".