682646 has 4 divisors (see below), whose sum is σ = 1023972. Its totient is φ = 341322.

The previous prime is 682637. The next prime is 682657. The reversal of 682646 is 646286.

It is a happy number.

682646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×682646² = 932011122632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

682646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170660 + ... + 170663.

It is an arithmetic number, because the mean of its divisors is an integer number (255993).

2⁶⁸²⁶⁴⁶ is an apocalyptic number.

682646 is a deficient number, since it is larger than the sum of its proper divisors (341326).

682646 is a wasteful number, since it uses less digits than its factorization.

682646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341325.

The product of its digits is 13824, while the sum is 32.

The square root of 682646 is about 826.2239405875. The cubic root of 682646 is about 88.0505047554.

The spelling of 682646 in words is "six hundred eighty-two thousand, six hundred forty-six".