85682785 has 4 divisors (see below), whose sum is σ = 102819348. Its totient is φ = 68546224.

The previous prime is 85682783. The next prime is 85682813. The reversal of 85682785 is 58728658.

It is a happy number.

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 39551521 + 46131264 = 6289^2 + 6792^2 .

It is a cyclic number.

It is not a de Polignac number, because 85682785 - 2¹ = 85682783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85682783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8568274 + ... + 8568283.

It is an arithmetic number, because the mean of its divisors is an integer number (25704837).

Almost surely, 2^85682785 is an apocalyptic number.

It is an amenable number.

85682785 is a deficient number, since it is larger than the sum of its proper divisors (17136563).

85682785 is a wasteful number, since it uses less digits than its factorization.

85682785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17136562.

The product of its digits is 1075200, while the sum is 49.

The square root of 85682785 is about 9256.4996083833. The cubic root of 85682785 is about 440.8571188511.

The spelling of 85682785 in words is "eighty-five million, six hundred eighty-two thousand, seven hundred eighty-five".