682861 has 4 divisors (see below), whose sum is σ = 689724. Its totient is φ = 676000.

The previous prime is 682819. The next prime is 682901. The reversal of 682861 is 168286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168286 = 2 ⋅84143.

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 72900 = 781^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 682861 - 2⁷ = 682733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3280 + ... + 3481.

It is an arithmetic number, because the mean of its divisors is an integer number (172431).

2⁶⁸²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

682861 is a deficient number, since it is larger than the sum of its proper divisors (6863).

682861 is a wasteful number, since it uses less digits than its factorization.

682861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6862.

The product of its digits is 4608, while the sum is 31.

The square root of 682861 is about 826.3540403483. The cubic root of 682861 is about 88.0597476483.

It can be divided in two parts, 6828 and 61, that added together give a square (6889 = 83²).

The spelling of 682861 in words is "six hundred eighty-two thousand, eight hundred sixty-one".