978716 has 12 divisors (see below), whose sum is σ = 1720488. Its totient is φ = 487152.

The previous prime is 978713. The next prime is 978727. The reversal of 978716 is 617879.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 978716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978713) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 830 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (143374).

2⁹⁷⁸⁷¹⁶ is an apocalyptic number.

It is an amenable number.

978716 is a deficient number, since it is larger than the sum of its proper divisors (741772).

978716 is a wasteful number, since it uses less digits than its factorization.

978716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1106 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 978716 is about 989.3007631656. The cubic root of 978716 is about 99.2854395284.

The spelling of 978716 in words is "nine hundred seventy-eight thousand, seven hundred sixteen".