85161216 has 216 divisors, whose sum is σ = 275890944. Its totient is φ = 23224320.

The previous prime is 85161187. The next prime is 85161217. The reversal of 85161216 is 61216158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85161217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166556 + ... + 1166628.

Almost surely, 2^85161216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85161216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137945472).

85161216 is an abundant number, since it is smaller than the sum of its proper divisors (190729728).

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

85161216 is a wasteful number, since it uses less digits than its factorization.

85161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 116 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 85161216 is about 9228.2834806913. The cubic root of 85161216 is about 439.9607678519.

The spelling of 85161216 in words is "eighty-five million, one hundred sixty-one thousand, two hundred sixteen".