85996820 has 48 divisors (see below), whose sum is σ = 222273408. Its totient is φ = 27216000.

The previous prime is 85996789. The next prime is 85996837. The reversal of 85996820 is 2869958.

It is a super-2 number, since 2×85996820² = 14790906100224800, which contains 22 as substring.

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, 21806 + ... + 25445.

It is an arithmetic number, because the mean of its divisors is an integer number (4630696).

Almost surely, 2^85996820 is an apocalyptic number.

It is an amenable number.

85996820 is an abundant number, since it is smaller than the sum of its proper divisors (136276588).

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

85996820 is a wasteful number, since it uses less digits than its factorization.

85996820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47280 (or 47278 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 85996820 is about 9273.4470398013. The cubic root of 85996820 is about 441.3950556594.

It can be divided in two parts, 859 and 96820, that added together give a palindrome (97679).

The spelling of 85996820 in words is "eighty-five million, nine hundred ninety-six thousand, eight hundred twenty".