706831 has 6 divisors (see below), whose sum is σ = 734496. Its totient is φ = 679500.

The previous prime is 706829. The next prime is 706837. The reversal of 706831 is 138607.

706831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 706831 - 2¹ = 706829 is a prime.

It is a super-2 number, since 2×706831² = 999220125122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 706796 and 706805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4606 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (122416).

2⁷⁰⁶⁸³¹ is an apocalyptic number.

706831 is a deficient number, since it is larger than the sum of its proper divisors (27665).

706831 is an equidigital number, since it uses as much as digits as its factorization.

706831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 706831 is about 840.7324187873. The cubic root of 706831 is about 89.0782882239.

The spelling of 706831 in words is "seven hundred six thousand, eight hundred thirty-one".