85171612 has 12 divisors (see below), whose sum is σ = 150846696. Its totient is φ = 42072560.

The previous prime is 85171607. The next prime is 85171613. The reversal of 85171612 is 21617158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85171613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127939 + ... + 128602.

It is an arithmetic number, because the mean of its divisors is an integer number (12570558).

Almost surely, 2^85171612 is an apocalyptic number.

It is an amenable number.

85171612 is a deficient number, since it is larger than the sum of its proper divisors (65675084).

85171612 is a wasteful number, since it uses less digits than its factorization.

85171612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256628 (or 256626 counting only the distinct ones).

The product of its digits is 3360, while the sum is 31.

The square root of 85171612 is about 9228.8467318512. The cubic root of 85171612 is about 439.9786697649.

The spelling of 85171612 in words is "eighty-five million, one hundred seventy-one thousand, six hundred twelve".