682157239 has 4 divisors (see below), whose sum is σ = 682831656. Its totient is φ = 681482824.

The previous prime is 682157183. The next prime is 682157251. The reversal of 682157239 is 932751286.

682157239 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: 932751286 = 2 ⋅466375643.

It is a cyclic number.

It is not a de Polignac number, because 682157239 - 2¹³ = 682149047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 682157195 and 682157204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682157269) 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, 335689 + ... + 337714.

It is an arithmetic number, because the mean of its divisors is an integer number (170707914).

Almost surely, 2^682157239 is an apocalyptic number.

682157239 is a deficient number, since it is larger than the sum of its proper divisors (674417).

682157239 is a wasteful number, since it uses less digits than its factorization.

682157239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674416.

The product of its digits is 181440, while the sum is 43.

The square root of 682157239 is about 26118.1400371466. The cubic root of 682157239 is about 880.2948559972.

The spelling of 682157239 in words is "six hundred eighty-two million, one hundred fifty-seven thousand, two hundred thirty-nine".