706439385 has 24 divisors (see below), whose sum is σ = 1247602824. Its totient is φ = 369657600.

The previous prime is 706439329. The next prime is 706439413. The reversal of 706439385 is 583934607.

706439385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 162103824 + 544335561 = 12732^2 + 23331^2 .

It is not a de Polignac number, because 706439385 - 2⁷ = 706439257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 706439385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145716 + ... + 150485.

It is an arithmetic number, because the mean of its divisors is an integer number (51983451).

Almost surely, 2^706439385 is an apocalyptic number.

It is an amenable number.

706439385 is a deficient number, since it is larger than the sum of its proper divisors (541163439).

706439385 is a wasteful number, since it uses less digits than its factorization.

706439385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296265 (or 296262 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 706439385 is about 26578.9274614308. The cubic root of 706439385 is about 890.6183410767.

The spelling of 706439385 in words is "seven hundred six million, four hundred thirty-nine thousand, three hundred eighty-five".