710639 has 4 divisors (see below), whose sum is σ = 720720. Its totient is φ = 700560.

The previous prime is 710627. The next prime is 710641. The reversal of 710639 is 936017.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936017 = 263 ⋅3559.

It is a cyclic number.

It is not a de Polignac number, because 710639 - 2⁴ = 710623 is a prime.

It is a Duffinian number.

710639 is a modest number, since divided by 639 gives 71 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (710609) 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, 4934 + ... + 5075.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

2⁷¹⁰⁶³⁹ is an apocalyptic number.

710639 is a deficient number, since it is larger than the sum of its proper divisors (10081).

710639 is a wasteful number, since it uses less digits than its factorization.

710639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080.

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

The square root of 710639 is about 842.9940687810. The cubic root of 710639 is about 89.2379693838.

The spelling of 710639 in words is "seven hundred ten thousand, six hundred thirty-nine".