785564985 has 16 divisors (see below), whose sum is σ = 1330839936. Its totient is φ = 394322688.

The previous prime is 785564959. The next prime is 785565041. The reversal of 785564985 is 589465587.

It is not a de Polignac number, because 785564985 - 2⁵ = 785564953 is a prime.

It is a super-2 number, since 2×785564985² = 1234224691316100450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540069 + ... + 1540578.

It is an arithmetic number, because the mean of its divisors is an integer number (83177496).

Almost surely, 2^785564985 is an apocalyptic number.

It is an amenable number.

785564985 is a deficient number, since it is larger than the sum of its proper divisors (545274951).

785564985 is a wasteful number, since it uses less digits than its factorization.

785564985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080672.

The product of its digits is 12096000, while the sum is 57.

The square root of 785564985 is about 28027.9322284039. The cubic root of 785564985 is about 922.7003934483.

The spelling of 785564985 in words is "seven hundred eighty-five million, five hundred sixty-four thousand, nine hundred eighty-five".