978105 has 16 divisors (see below), whose sum is σ = 1577664. Its totient is φ = 517440.

The previous prime is 978091. The next prime is 978113. The reversal of 978105 is 501879.

It is not a de Polignac number, because 978105 - 2⁵ = 978073 is a prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978105.

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 15 ways as a sum of consecutive naturals, for example, 2790 + ... + 3120.

It is an arithmetic number, because the mean of its divisors is an integer number (98604).

2⁹⁷⁸¹⁰⁵ is an apocalyptic number.

It is an amenable number.

978105 is a deficient number, since it is larger than the sum of its proper divisors (599559).

978105 is a wasteful number, since it uses less digits than its factorization.

978105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 978105 is about 988.9919109882. The cubic root of 978105 is about 99.2647743468.

The spelling of 978105 in words is "nine hundred seventy-eight thousand, one hundred five".