706139 has 6 divisors (see below), whose sum is σ = 821484. Its totient is φ = 605220.

The previous prime is 706133. The next prime is 706141. The reversal of 706139 is 931607.

It is a happy number.

It is not a de Polignac number, because 706139 - 2⁸ = 705883 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7157 + ... + 7254.

It is an arithmetic number, because the mean of its divisors is an integer number (136914).

2⁷⁰⁶¹³⁹ is an apocalyptic number.

706139 is a deficient number, since it is larger than the sum of its proper divisors (115345).

706139 is a wasteful number, since it uses less digits than its factorization.

706139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14425 (or 14418 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 706139 is about 840.3207720865. The cubic root of 706139 is about 89.0492089944.

The spelling of 706139 in words is "seven hundred six thousand, one hundred thirty-nine".