785394985 has 8 divisors (see below), whose sum is σ = 997913736. Its totient is φ = 591356160.

The previous prime is 785394983. The next prime is 785394989. The reversal of 785394985 is 589493587.

It can be written as a sum of positive squares in 4 ways, for example, as 33977241 + 751417744 = 5829^2 + 27412^2 .

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

It is not a de Polignac number, because 785394985 - 2¹ = 785394983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (785394983) 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, 4619886 + ... + 4620055.

It is an arithmetic number, because the mean of its divisors is an integer number (124739217).

Almost surely, 2^785394985 is an apocalyptic number.

It is an amenable number.

785394985 is a deficient number, since it is larger than the sum of its proper divisors (212518751).

785394985 is a wasteful number, since it uses less digits than its factorization.

785394985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9239963.

The product of its digits is 10886400, while the sum is 58.

The square root of 785394985 is about 28024.8993753769. The cubic root of 785394985 is about 922.6338297283.

The spelling of 785394985 in words is "seven hundred eighty-five million, three hundred ninety-four thousand, nine hundred eighty-five".