682978 has 8 divisors (see below), whose sum is σ = 1049580. Its totient is φ = 333120.

The previous prime is 682967. The next prime is 683003. The reversal of 682978 is 879286.

It can be written as a sum of positive squares in 2 ways, for example, as 528529 + 154449 = 727^2 + 393^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 682978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4083 + ... + 4246.

2⁶⁸²⁹⁷⁸ is an apocalyptic number.

682978 is a deficient number, since it is larger than the sum of its proper divisors (366602).

682978 is a wasteful number, since it uses less digits than its factorization.

682978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372.

The product of its digits is 48384, while the sum is 40.

The square root of 682978 is about 826.4248302175. The cubic root of 682978 is about 88.0647766864.

The spelling of 682978 in words is "six hundred eighty-two thousand, nine hundred seventy-eight".