978683 has 2 divisors, whose sum is σ = 978684. Its totient is φ = 978682.

The previous prime is 978647. The next prime is 978689. The reversal of 978683 is 386879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 978683 - 2⁶ = 978619 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 978683.

It is not a weakly prime, because it can be changed into another prime (978689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489341 + 489342.

It is an arithmetic number, because the mean of its divisors is an integer number (489342).

2⁹⁷⁸⁶⁸³ is an apocalyptic number.

978683 is a deficient number, since it is larger than the sum of its proper divisors (1).

978683 is an equidigital number, since it uses as much as digits as its factorization.

978683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 978683 is about 989.2840845783. The cubic root of 978683 is about 99.2843236254.

It can be divided in two parts, 978 and 683, that added together give a palindrome (1661).

The spelling of 978683 in words is "nine hundred seventy-eight thousand, six hundred eighty-three".