682139 has 4 divisors (see below), whose sum is σ = 686256. Its totient is φ = 678024.

The previous prime is 682079. The next prime is 682141. The reversal of 682139 is 931286.

682139 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, and also an emirpimes, since its reverse is a distinct semiprime: 931286 = 2 ⋅465643.

It is a cyclic number.

It is not a de Polignac number, because 682139 - 2⁸ = 681883 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 682139.

It is not an unprimeable number, because it can be changed into a prime (682439) 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, 1799 + ... + 2144.

It is an arithmetic number, because the mean of its divisors is an integer number (171564).

2⁶⁸²¹³⁹ is an apocalyptic number.

682139 is a deficient number, since it is larger than the sum of its proper divisors (4117).

682139 is a wasteful number, since it uses less digits than its factorization.

682139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116.

The product of its digits is 2592, while the sum is 29.

The square root of 682139 is about 825.9170660545. The cubic root of 682139 is about 88.0287010376.

The spelling of 682139 in words is "six hundred eighty-two thousand, one hundred thirty-nine".