85217924 has 12 divisors (see below), whose sum is σ = 162688848. Its totient is φ = 38735400.

The previous prime is 85217887. The next prime is 85217927. The reversal of 85217924 is 42971258.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85217927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968342 + ... + 968429.

It is an arithmetic number, because the mean of its divisors is an integer number (13557404).

Almost surely, 2^85217924 is an apocalyptic number.

It is an amenable number.

85217924 is a deficient number, since it is larger than the sum of its proper divisors (77470924).

85217924 is a wasteful number, since it uses less digits than its factorization.

85217924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936786 (or 1936784 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 85217924 is about 9231.3554801015. The cubic root of 85217924 is about 440.0584013389.

The spelling of 85217924 in words is "eighty-five million, two hundred seventeen thousand, nine hundred twenty-four".