85719785 has 8 divisors (see below), whose sum is σ = 102959880. Its totient is φ = 68511744.

The previous prime is 85719779. The next prime is 85719817. The reversal of 85719785 is 58791758.

It can be written as a sum of positive squares in 4 ways, for example, as 9314704 + 76405081 = 3052^2 + 8741^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85719785 - 2¹⁰ = 85718761 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670 + ... + 13199.

It is an arithmetic number, because the mean of its divisors is an integer number (12869985).

Almost surely, 2^85719785 is an apocalyptic number.

It is an amenable number.

85719785 is a deficient number, since it is larger than the sum of its proper divisors (17240095).

85719785 is a wasteful number, since it uses less digits than its factorization.

85719785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16027.

The product of its digits is 705600, while the sum is 50.

The square root of 85719785 is about 9258.4979883348. The cubic root of 85719785 is about 440.9205674813.

The spelling of 85719785 in words is "eighty-five million, seven hundred nineteen thousand, seven hundred eighty-five".