682813 has 4 divisors (see below), whose sum is σ = 684508. Its totient is φ = 681120.

The previous prime is 682811. The next prime is 682819. The reversal of 682813 is 318286.

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

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 71289 = 782^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 682813 - 2¹ = 682811 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, 145 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (171127).

2⁶⁸²⁸¹³ is an apocalyptic number.

It is an amenable number.

682813 is a deficient number, since it is larger than the sum of its proper divisors (1695).

682813 is a wasteful number, since it uses less digits than its factorization.

682813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694.

The product of its digits is 2304, while the sum is 28.

The square root of 682813 is about 826.3249965964. The cubic root of 682813 is about 88.0576842869.

The spelling of 682813 in words is "six hundred eighty-two thousand, eight hundred thirteen".