85563789 has 16 divisors (see below), whose sum is σ = 115257600. Its totient is φ = 56460096.

The previous prime is 85563773. The next prime is 85563827. The reversal of 85563789 is 98736558.

It is not a de Polignac number, because 85563789 - 2⁴ = 85563773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85563719) by changing a digit.

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, 184572 + ... + 185034.

It is an arithmetic number, because the mean of its divisors is an integer number (7203600).

Almost surely, 2^85563789 is an apocalyptic number.

It is an amenable number.

85563789 is a deficient number, since it is larger than the sum of its proper divisors (29693811).

85563789 is a wasteful number, since it uses less digits than its factorization.

85563789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964.

The product of its digits is 1814400, while the sum is 51.

The square root of 85563789 is about 9250.0696754133. The cubic root of 85563789 is about 440.6529372760.

The spelling of 85563789 in words is "eighty-five million, five hundred sixty-three thousand, seven hundred eighty-nine".