85921776 has 80 divisors (see below), whose sum is σ = 249150720. Its totient is φ = 28347840.

The previous prime is 85921763. The next prime is 85921793. The reversal of 85921776 is 67712958.

It is a congruent number.

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, 43531 + ... + 45461.

It is an arithmetic number, because the mean of its divisors is an integer number (3114384).

Almost surely, 2^85921776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85921776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124575360).

85921776 is an abundant number, since it is smaller than the sum of its proper divisors (163228944).

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

85921776 is a wasteful number, since it uses less digits than its factorization.

85921776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2039 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 85921776 is about 9269.3999805813. The cubic root of 85921776 is about 441.2666257542.

The spelling of 85921776 in words is "eighty-five million, nine hundred twenty-one thousand, seven hundred seventy-six".