85171340 has 12 divisors (see below), whose sum is σ = 178859856. Its totient is φ = 34068528.

The previous prime is 85171337. The next prime is 85171349. The reversal of 85171340 is 4317158.

It is not an unprimeable number, because it can be changed into a prime (85171349) 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, 2129264 + ... + 2129303.

It is an arithmetic number, because the mean of its divisors is an integer number (14904988).

Almost surely, 2^85171340 is an apocalyptic number.

It is an amenable number.

85171340 is an abundant number, since it is smaller than the sum of its proper divisors (93688516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85171340 is a wasteful number, since it uses less digits than its factorization.

85171340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258576 (or 4258574 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 85171340 is about 9228.8319954369. The cubic root of 85171340 is about 439.9782013994.

Adding to 85171340 its reverse (4317158), we get a palindrome (89488498).

The spelling of 85171340 in words is "eighty-five million, one hundred seventy-one thousand, three hundred forty".