85558018 has 24 divisors (see below), whose sum is σ = 160776252. Its totient is φ = 33846624.

The previous prime is 85558013. The next prime is 85558043. The reversal of 85558018 is 81085558.

It can be written as a sum of positive squares in 2 ways, for example, as 66048129 + 19509889 = 8127^2 + 4417^2 .

It is not an unprimeable number, because it can be changed into a prime (85558013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32305 + ... + 34852.

Almost surely, 2^85558018 is an apocalyptic number.

85558018 is a deficient number, since it is larger than the sum of its proper divisors (75218234).

85558018 is a wasteful number, since it uses less digits than its factorization.

85558018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67186 (or 67179 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

The square root of 85558018 is about 9249.7577265570. The cubic root of 85558018 is about 440.6430301828.

The spelling of 85558018 in words is "eighty-five million, five hundred fifty-eight thousand, eighteen".