85211986 has 8 divisors (see below), whose sum is σ = 127951740. Its totient is φ = 42561408.

The previous prime is 85211977. The next prime is 85211993. The reversal of 85211986 is 68911258.

It can be written as a sum of positive squares in 2 ways, for example, as 85211361 + 625 = 9231^2 + 25^2 .

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

It is a super-2 number, since 2×85211986² = 14522165116128392, which contains 22 as substring.

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, 19851 + ... + 23758.

Almost surely, 2^85211986 is an apocalyptic number.

85211986 is a deficient number, since it is larger than the sum of its proper divisors (42739754).

85211986 is a wasteful number, since it uses less digits than its factorization.

85211986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44588.

The product of its digits is 34560, while the sum is 40.

The square root of 85211986 is about 9231.0338532583. The cubic root of 85211986 is about 440.0481799858.

The spelling of 85211986 in words is "eighty-five million, two hundred eleven thousand, nine hundred eighty-six".