682642 has 4 divisors (see below), whose sum is σ = 1023966. Its totient is φ = 341320.

The previous prime is 682637. The next prime is 682657. The reversal of 682642 is 246286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246286 = 2 ⋅123143.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 11881 = 819^2 + 109^2 .

It is a super-3 number, since 3×682642³ = 954333721128459864, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 682642.

It is an unprimeable number.

682642 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, 170659 + ... + 170662.

2⁶⁸²⁶⁴² is an apocalyptic number.

682642 is a deficient number, since it is larger than the sum of its proper divisors (341324).

682642 is a wasteful number, since it uses less digits than its factorization.

682642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341323.

The product of its digits is 4608, while the sum is 28.

The square root of 682642 is about 826.2215199328. The cubic root of 682642 is about 88.0503327763.

The spelling of 682642 in words is "six hundred eighty-two thousand, six hundred forty-two".