85645624 has 8 divisors (see below), whose sum is σ = 160585560. Its totient is φ = 42822808.

The previous prime is 85645607. The next prime is 85645657. The reversal of 85645624 is 42654658.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5352844 + ... + 5352859.

It is an arithmetic number, because the mean of its divisors is an integer number (20073195).

Almost surely, 2^85645624 is an apocalyptic number.

It is an amenable number.

85645624 is a deficient number, since it is larger than the sum of its proper divisors (74939936).

85645624 is a wasteful number, since it uses less digits than its factorization.

85645624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10705709 (or 10705705 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 85645624 is about 9254.4920984352. The cubic root of 85645624 is about 440.7933757457.

The spelling of 85645624 in words is "eighty-five million, six hundred forty-five thousand, six hundred twenty-four".