70839 has 12 divisors (see below), whose sum is σ = 108576. Its totient is φ = 44352.

The previous prime is 70823. The next prime is 70841. The reversal of 70839 is 93807.

It is a happy number.

70839 is nontrivially palindromic in base 5.

It is not a de Polignac number, because 70839 - 2⁴ = 70823 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79 + ... + 384.

It is an arithmetic number, because the mean of its divisors is an integer number (9048).

2⁷⁰⁸³⁹ is an apocalyptic number.

70839 is a deficient number, since it is larger than the sum of its proper divisors (37737).

70839 is a wasteful number, since it uses less digits than its factorization.

70839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 70839 is about 266.1559693112. The cubic root of 70839 is about 41.3768546675.

It can be divided in two parts, 708 and 39, that added together give a palindrome (747).

The spelling of 70839 in words is "seventy thousand, eight hundred thirty-nine".