855668589 has 4 divisors (see below), whose sum is σ = 1140891456. Its totient is φ = 570445724.

The previous prime is 855668587. The next prime is 855668651. The reversal of 855668589 is 985866558.

855668589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855668589 - 2¹ = 855668587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855668587) 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, 142611429 + ... + 142611434.

It is an arithmetic number, because the mean of its divisors is an integer number (285222864).

Almost surely, 2^855668589 is an apocalyptic number.

It is an amenable number.

855668589 is a deficient number, since it is larger than the sum of its proper divisors (285222867).

855668589 is a wasteful number, since it uses less digits than its factorization.

855668589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285222866.

The product of its digits is 20736000, while the sum is 60.

The square root of 855668589 is about 29251.8134309653. The cubic root of 855668589 is about 949.3693280412.

The spelling of 855668589 in words is "eight hundred fifty-five million, six hundred sixty-eight thousand, five hundred eighty-nine".