85244865 has 16 divisors (see below), whose sum is σ = 136511808. Its totient is φ = 45423936.

The previous prime is 85244857. The next prime is 85244899. The reversal of 85244865 is 56844258.

It is not a de Polignac number, because 85244865 - 2³ = 85244857 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 24579 + ... + 27831.

It is an arithmetic number, because the mean of its divisors is an integer number (8531988).

Almost surely, 2^85244865 is an apocalyptic number.

It is an amenable number.

85244865 is a deficient number, since it is larger than the sum of its proper divisors (51266943).

85244865 is a wasteful number, since it uses less digits than its factorization.

85244865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008.

The product of its digits is 307200, while the sum is 42.

The square root of 85244865 is about 9232.8145762817. The cubic root of 85244865 is about 440.1047701610.

The spelling of 85244865 in words is "eighty-five million, two hundred forty-four thousand, eight hundred sixty-five".