85642518 has 32 divisors (see below), whose sum is σ = 185724000. Its totient is φ = 26171136.

The previous prime is 85642493. The next prime is 85642523. The reversal of 85642518 is 81524658.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 15 ways as a sum of consecutive naturals, for example, 7938 + ... + 15306.

It is an arithmetic number, because the mean of its divisors is an integer number (5803875).

Almost surely, 2^85642518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85642518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92862000).

85642518 is an abundant number, since it is smaller than the sum of its proper divisors (100081482).

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

85642518 is a wasteful number, since it uses less digits than its factorization.

85642518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536.

The product of its digits is 76800, while the sum is 39.

The square root of 85642518 is about 9254.3242865160. The cubic root of 85642518 is about 440.7880471186.

The spelling of 85642518 in words is "eighty-five million, six hundred forty-two thousand, five hundred eighteen".