85130785 has 4 divisors (see below), whose sum is σ = 102156948. Its totient is φ = 68104624.

The previous prime is 85130777. The next prime is 85130809. The reversal of 85130785 is 58703158.

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 49322529 + 35808256 = 7023^2 + 5984^2 .

It is a cyclic number.

It is not a de Polignac number, because 85130785 - 2³ = 85130777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 8513074 + ... + 8513083.

It is an arithmetic number, because the mean of its divisors is an integer number (25539237).

Almost surely, 2^85130785 is an apocalyptic number.

It is an amenable number.

85130785 is a deficient number, since it is larger than the sum of its proper divisors (17026163).

85130785 is a wasteful number, since it uses less digits than its factorization.

85130785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17026162.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 85130785 is about 9226.6345435375. The cubic root of 85130785 is about 439.9083572915.

The spelling of 85130785 in words is "eighty-five million, one hundred thirty thousand, seven hundred eighty-five".