85137166 has 4 divisors (see below), whose sum is σ = 127705752. Its totient is φ = 42568582.

The previous prime is 85137149. The next prime is 85137179. The reversal of 85137166 is 66173158.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21284290 + ... + 21284293.

It is an arithmetic number, because the mean of its divisors is an integer number (31926438).

Almost surely, 2^85137166 is an apocalyptic number.

85137166 is a deficient number, since it is larger than the sum of its proper divisors (42568586).

85137166 is a wasteful number, since it uses less digits than its factorization.

85137166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42568585.

The product of its digits is 30240, while the sum is 37.

The square root of 85137166 is about 9226.9803294469. The cubic root of 85137166 is about 439.9193481651.

The spelling of 85137166 in words is "eighty-five million, one hundred thirty-seven thousand, one hundred sixty-six".