706939679785 has 4 divisors (see below), whose sum is σ = 848327615748. Its totient is φ = 565551743824.

The previous prime is 706939679783. The next prime is 706939679813. The reversal of 706939679785 is 587976939607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91744169449 + 615195510336 = 302893^2 + 784344^2 .

It is a cyclic number.

It is not a de Polignac number, because 706939679785 - 2¹ = 706939679783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706939679783) 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, 70693967974 + ... + 70693967983.

It is an arithmetic number, because the mean of its divisors is an integer number (212081903937).

Almost surely, 2^706939679785 is an apocalyptic number.

It is an amenable number.

706939679785 is a deficient number, since it is larger than the sum of its proper divisors (141387935963).

706939679785 is a wasteful number, since it uses less digits than its factorization.

706939679785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141387935962.

The product of its (nonzero) digits is 1080203040, while the sum is 76.

The spelling of 706939679785 in words is "seven hundred six billion, nine hundred thirty-nine million, six hundred seventy-nine thousand, seven hundred eighty-five".