85997624 has 8 divisors (see below), whose sum is σ = 161245560. Its totient is φ = 42998808.

The previous prime is 85997609. The next prime is 85997647. The reversal of 85997624 is 42679958.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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, 5374844 + ... + 5374859.

It is an arithmetic number, because the mean of its divisors is an integer number (20155695).

Almost surely, 2^85997624 is an apocalyptic number.

It is an amenable number.

85997624 is a deficient number, since it is larger than the sum of its proper divisors (75247936).

85997624 is a wasteful number, since it uses less digits than its factorization.

85997624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10749709 (or 10749705 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 85997624 is about 9273.4903892763. The cubic root of 85997624 is about 441.3964312162.

The spelling of 85997624 in words is "eighty-five million, nine hundred ninety-seven thousand, six hundred twenty-four".