706239 has 10 divisors (see below), whose sum is σ = 1055120. Its totient is φ = 470772.

The previous prime is 706229. The next prime is 706253. The reversal of 706239 is 932607.

It is not a de Polignac number, because 706239 - 2⁵ = 706207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

706239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4279 + ... + 4440.

It is an arithmetic number, because the mean of its divisors is an integer number (105512).

2⁷⁰⁶²³⁹ is an apocalyptic number.

706239 is a deficient number, since it is larger than the sum of its proper divisors (348881).

706239 is an equidigital number, since it uses as much as digits as its factorization.

706239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731 (or 8722 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 706239 is about 840.3802710678. The cubic root of 706239 is about 89.0534123692.

Adding to 706239 its sum of digits (27), we get a triangular number (706266 = T₁₁₈₈).

The spelling of 706239 in words is "seven hundred six thousand, two hundred thirty-nine".