85289786 has 4 divisors (see below), whose sum is σ = 127934682. Its totient is φ = 42644892.

The previous prime is 85289767. The next prime is 85289791. The reversal of 85289786 is 68798258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68798258 = 2 ⋅34399129.

It can be written as a sum of positive squares in only one way, i.e., 78659161 + 6630625 = 8869^2 + 2575^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21322445 + ... + 21322448.

Almost surely, 2^85289786 is an apocalyptic number.

85289786 is a deficient number, since it is larger than the sum of its proper divisors (42644896).

85289786 is a wasteful number, since it uses less digits than its factorization.

85289786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42644895.

The product of its digits is 1935360, while the sum is 53.

The square root of 85289786 is about 9235.2469376839. The cubic root of 85289786 is about 440.1820630853.

The spelling of 85289786 in words is "eighty-five million, two hundred eighty-nine thousand, seven hundred eighty-six".