678982 has 4 divisors (see below), whose sum is σ = 1018476. Its totient is φ = 339490.

The previous prime is 678971. The next prime is 678989. The reversal of 678982 is 289876.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×678982² = 922033112648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169744 + ... + 169747.

It is an arithmetic number, because the mean of its divisors is an integer number (254619).

2⁶⁷⁸⁹⁸² is an apocalyptic number.

678982 is a deficient number, since it is larger than the sum of its proper divisors (339494).

678982 is a wasteful number, since it uses less digits than its factorization.

678982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339493.

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

The square root of 678982 is about 824.0036407687. The cubic root of 678982 is about 87.8926894425.

The spelling of 678982 in words is "six hundred seventy-eight thousand, nine hundred eighty-two".