85524689 has 12 divisors (see below), whose sum is σ = 88383360. Its totient is φ = 82743960.

The previous prime is 85524661. The next prime is 85524697. The reversal of 85524689 is 98642558.

It is a de Polignac number, because none of the positive numbers 2^k-85524689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85524289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274844 + ... + 275154.

It is an arithmetic number, because the mean of its divisors is an integer number (7365280).

Almost surely, 2^85524689 is an apocalyptic number.

It is an amenable number.

85524689 is a deficient number, since it is larger than the sum of its proper divisors (2858671).

85524689 is an equidigital number, since it uses as much as digits as its factorization.

85524689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 449 counting only the distinct ones).

The product of its digits is 691200, while the sum is 47.

The square root of 85524689 is about 9247.9559363137. The cubic root of 85524689 is about 440.5858054703.

The spelling of 85524689 in words is "eighty-five million, five hundred twenty-four thousand, six hundred eighty-nine".