670730822785 has 4 divisors (see below), whose sum is σ = 804876987348. Its totient is φ = 536584658224.

The previous prime is 670730822687. The next prime is 670730822791. The reversal of 670730822785 is 587228037076.

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 272116635904 + 398614186881 = 521648^2 + 631359^2 .

It is a cyclic number.

It is not a de Polignac number, because 670730822785 - 2²³ = 670722434177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67073082274 + ... + 67073082283.

It is an arithmetic number, because the mean of its divisors is an integer number (201219246837).

Almost surely, 2^670730822785 is an apocalyptic number.

It is an amenable number.

670730822785 is a deficient number, since it is larger than the sum of its proper divisors (134146164563).

670730822785 is a wasteful number, since it uses less digits than its factorization.

670730822785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134146164562.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 670730822785 in words is "six hundred seventy billion, seven hundred thirty million, eight hundred twenty-two thousand, seven hundred eighty-five".