682309 has 4 divisors (see below), whose sum is σ = 718240. Its totient is φ = 646380.

The previous prime is 682307. The next prime is 682321. The reversal of 682309 is 903286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 682309 - 2¹ = 682307 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 (682303) 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, 17937 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (179560).

2⁶⁸²³⁰⁹ is an apocalyptic number.

It is an amenable number.

682309 is a deficient number, since it is larger than the sum of its proper divisors (35931).

682309 is a wasteful number, since it uses less digits than its factorization.

682309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35930.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 682309 is about 826.0199755454. The cubic root of 682309 is about 88.0360131525.

The spelling of 682309 in words is "six hundred eighty-two thousand, three hundred nine".