85804621 has 16 divisors (see below), whose sum is σ = 101785600. Its totient is φ = 70781040.

The previous prime is 85804619. The next prime is 85804643. The reversal of 85804621 is 12640858.

It is a cyclic number.

It is not a de Polignac number, because 85804621 - 2¹ = 85804619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85808621) 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, 42190 + ... + 44176.

It is an arithmetic number, because the mean of its divisors is an integer number (6361600).

Almost surely, 2^85804621 is an apocalyptic number.

It is an amenable number.

85804621 is a deficient number, since it is larger than the sum of its proper divisors (15980979).

85804621 is a wasteful number, since it uses less digits than its factorization.

85804621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85804621 is about 9263.0783760044. The cubic root of 85804621 is about 441.0659777230.

The spelling of 85804621 in words is "eighty-five million, eight hundred four thousand, six hundred twenty-one".