85481864 has 16 divisors (see below), whose sum is σ = 172607820. Its totient is φ = 39453120.

The previous prime is 85481857. The next prime is 85481867. The reversal of 85481864 is 46818458.

It can be written as a sum of positive squares in 2 ways, for example, as 83868964 + 1612900 = 9158^2 + 1270^2 .

It is not an unprimeable number, because it can be changed into a prime (85481867) 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, 410867 + ... + 411074.

Almost surely, 2^85481864 is an apocalyptic number.

It is an amenable number.

85481864 is an abundant number, since it is smaller than the sum of its proper divisors (87125956).

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

85481864 is a wasteful number, since it uses less digits than its factorization.

85481864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821960 (or 821956 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The square root of 85481864 is about 9245.6402698786. The cubic root of 85481864 is about 440.5122546337.

The spelling of 85481864 in words is "eighty-five million, four hundred eighty-one thousand, eight hundred sixty-four".