85628107866 has 32 divisors (see below), whose sum is σ = 195746070528. Its totient is φ = 24462088560.

The previous prime is 85628107841. The next prime is 85628107879. The reversal of 85628107866 is 66870182658.

It is a happy number.

It is a super-2 number, since 2×85628107866² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219571 + ... + 468473.

It is an arithmetic number, because the mean of its divisors is an integer number (6117064704).

Almost surely, 2^85628107866 is an apocalyptic number.

85628107866 is an abundant number, since it is smaller than the sum of its proper divisors (110117962662).

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

85628107866 is a wasteful number, since it uses less digits than its factorization.

85628107866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257106.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 85628107866 in words is "eighty-five billion, six hundred twenty-eight million, one hundred seven thousand, eight hundred sixty-six".