85204587 has 16 divisors (see below), whose sum is σ = 123538688. Its totient is φ = 51922080.

The previous prime is 85204583. The next prime is 85204591. The reversal of 85204587 is 78540258.

It is an interprime number because it is at equal distance from previous prime (85204583) and next prime (85204591).

It is not a de Polignac number, because 85204587 - 2² = 85204583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (85204583) 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, 6589 + ... + 14622.

It is an arithmetic number, because the mean of its divisors is an integer number (7721168).

Almost surely, 2^85204587 is an apocalyptic number.

85204587 is a deficient number, since it is larger than the sum of its proper divisors (38334101).

85204587 is a wasteful number, since it uses less digits than its factorization.

85204587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21330.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 85204587 is about 9230.6330768805. The cubic root of 85204587 is about 440.0354430815.

The spelling of 85204587 in words is "eighty-five million, two hundred four thousand, five hundred eighty-seven".