785705056889 has 8 divisors (see below), whose sum is σ = 835246649280. Its totient is φ = 736982334000.

The previous prime is 785705056879. The next prime is 785705056919. The reversal of 785705056889 is 988650507587.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785705056889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785705056879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204715397 + ... + 204719234.

It is an arithmetic number, because the mean of its divisors is an integer number (104405831160).

Almost surely, 2^785705056889 is an apocalyptic number.

It is an amenable number.

785705056889 is a deficient number, since it is larger than the sum of its proper divisors (49541592391).

785705056889 is a wasteful number, since it uses less digits than its factorization.

785705056889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409434751.

The product of its (nonzero) digits is 169344000, while the sum is 68.

The spelling of 785705056889 in words is "seven hundred eighty-five billion, seven hundred five million, fifty-six thousand, eight hundred eighty-nine".