85259816 has 8 divisors (see below), whose sum is σ = 159862170. Its totient is φ = 42629904.

The previous prime is 85259809. The next prime is 85259843. The reversal of 85259816 is 61895258.

It can be written as a sum of positive squares in only one way, i.e., 83795716 + 1464100 = 9154^2 + 1210^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5328731 + ... + 5328746.

Almost surely, 2^85259816 is an apocalyptic number.

It is an amenable number.

85259816 is a deficient number, since it is larger than the sum of its proper divisors (74602354).

85259816 is a wasteful number, since it uses less digits than its factorization.

85259816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657483 (or 10657479 counting only the distinct ones).

The product of its digits is 172800, while the sum is 44.

The square root of 85259816 is about 9233.6242072114. The cubic root of 85259816 is about 440.1304984820.

The spelling of 85259816 in words is "eighty-five million, two hundred fifty-nine thousand, eight hundred sixteen".