705856685 has 8 divisors (see below), whose sum is σ = 847178136. Its totient is φ = 564585280.

The previous prime is 705856633. The next prime is 705856709. The reversal of 705856685 is 586658507.

It can be written as a sum of positive squares in 4 ways, for example, as 5354596 + 700502089 = 2314^2 + 26467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 705856685 - 2⁸ = 705856429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34775 + ... + 51195.

It is an arithmetic number, because the mean of its divisors is an integer number (105897267).

Almost surely, 2^705856685 is an apocalyptic number.

It is an amenable number.

705856685 is a deficient number, since it is larger than the sum of its proper divisors (141321451).

705856685 is a wasteful number, since it uses less digits than its factorization.

705856685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25023.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The square root of 705856685 is about 26567.9635087072. The cubic root of 705856685 is about 890.3734009487.

The spelling of 705856685 in words is "seven hundred five million, eight hundred fifty-six thousand, six hundred eighty-five".