85815536 has 20 divisors (see below), whose sum is σ = 167144064. Its totient is φ = 42681600.

The previous prime is 85815517. The next prime is 85815577. The reversal of 85815536 is 63551858.

It is a junction number, because it is equal to n+sod(n) for n = 85815493 and 85815502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10985 + ... + 17096.

Almost surely, 2^85815536 is an apocalyptic number.

It is an amenable number.

85815536 is a deficient number, since it is larger than the sum of its proper divisors (81328528).

85815536 is a wasteful number, since it uses less digits than its factorization.

85815536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28280 (or 28274 counting only the distinct ones).

The product of its digits is 144000, while the sum is 41.

The square root of 85815536 is about 9263.6675242584. The cubic root of 85815536 is about 441.0846792450.

The spelling of 85815536 in words is "eighty-five million, eight hundred fifteen thousand, five hundred thirty-six".