85111898 has 8 divisors (see below), whose sum is σ = 128481492. Its totient is φ = 42284736.

The previous prime is 85111883. The next prime is 85111903. The reversal of 85111898 is 89811158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83960569 + 1151329 = 9163^2 + 1073^2 .

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

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, 135215 + ... + 135842.

Almost surely, 2^85111898 is an apocalyptic number.

85111898 is a deficient number, since it is larger than the sum of its proper divisors (43369594).

85111898 is a wasteful number, since it uses less digits than its factorization.

85111898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271216.

The product of its digits is 23040, while the sum is 41.

The square root of 85111898 is about 9225.6109824770. The cubic root of 85111898 is about 439.8758223957.

The spelling of 85111898 in words is "eighty-five million, one hundred eleven thousand, eight hundred ninety-eight".