85801984 has 22 divisors (see below), whose sum is σ = 171522224. Its totient is φ = 42900480.

The previous prime is 85801973. The next prime is 85802021. The reversal of 85801984 is 48910858.

It is a self number, because there is not a number n which added to its sum of digits gives 85801984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40872 + ... + 42919.

Almost surely, 2^85801984 is an apocalyptic number.

It is an amenable number.

85801984 is a deficient number, since it is larger than the sum of its proper divisors (85720240).

85801984 is an equidigital number, since it uses as much as digits as its factorization.

85801984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83811 (or 83793 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 85801984 is about 9262.9360356207. The cubic root of 85801984 is about 441.0614593070.

The spelling of 85801984 in words is "eighty-five million, eight hundred one thousand, nine hundred eighty-four".