85977858 has 32 divisors (see below), whose sum is σ = 174589632. Its totient is φ = 28224000.

The previous prime is 85977847. The next prime is 85977877. The reversal of 85977858 is 85877958.

It is a junction number, because it is equal to n+sod(n) for n = 85977798 and 85977807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142758 + ... + 143358.

It is an arithmetic number, because the mean of its divisors is an integer number (5455926).

Almost surely, 2^85977858 is an apocalyptic number.

85977858 is an abundant number, since it is smaller than the sum of its proper divisors (88611774).

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

85977858 is a wasteful number, since it uses less digits than its factorization.

85977858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its digits is 5644800, while the sum is 57.

The square root of 85977858 is about 9272.4246020121. The cubic root of 85977858 is about 441.3626112493.

The spelling of 85977858 in words is "eighty-five million, nine hundred seventy-seven thousand, eight hundred fifty-eight".