85999704 has 128 divisors (see below), whose sum is σ = 259584000. Its totient is φ = 23708160.

The previous prime is 85999679. The next prime is 85999723. The reversal of 85999704 is 40799958.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255024 + ... + 255360.

It is an arithmetic number, because the mean of its divisors is an integer number (2028000).

Almost surely, 2^85999704 is an apocalyptic number.

85999704 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85999704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129792000).

85999704 is an abundant number, since it is smaller than the sum of its proper divisors (173584296).

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

85999704 is a wasteful number, since it uses less digits than its factorization.

85999704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 85999704 is about 9273.6025362315. The cubic root of 85999704 is about 441.3999898307.

The spelling of 85999704 in words is "eighty-five million, nine hundred ninety-nine thousand, seven hundred four".