85791385 has 4 divisors (see below), whose sum is σ = 102949668. Its totient is φ = 68633104.

The previous prime is 85791337. The next prime is 85791413. The reversal of 85791385 is 58319758.

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 52186176 + 33605209 = 7224^2 + 5797^2 .

It is a cyclic number.

It is not a de Polignac number, because 85791385 - 2¹⁹ = 85267097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8579134 + ... + 8579143.

It is an arithmetic number, because the mean of its divisors is an integer number (25737417).

Almost surely, 2^85791385 is an apocalyptic number.

It is an amenable number.

85791385 is a deficient number, since it is larger than the sum of its proper divisors (17158283).

85791385 is a wasteful number, since it uses less digits than its factorization.

85791385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17158282.

The product of its digits is 302400, while the sum is 46.

The square root of 85791385 is about 9262.3638991350. The cubic root of 85791385 is about 441.0432973225.

The spelling of 85791385 in words is "eighty-five million, seven hundred ninety-one thousand, three hundred eighty-five".