855500866 has 8 divisors (see below), whose sum is σ = 1399910544. Its totient is φ = 388864020.

The previous prime is 855500857. The next prime is 855500869. The reversal of 855500866 is 668005558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (855500869) 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, 19443180 + ... + 19443223.

It is an arithmetic number, because the mean of its divisors is an integer number (174988818).

Almost surely, 2^855500866 is an apocalyptic number.

855500866 is a deficient number, since it is larger than the sum of its proper divisors (544409678).

855500866 is a wasteful number, since it uses less digits than its factorization.

855500866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38886416.

The product of its (nonzero) digits is 288000, while the sum is 43.

The square root of 855500866 is about 29248.9464083751. The cubic root of 855500866 is about 949.3072941031.

The spelling of 855500866 in words is "eight hundred fifty-five million, five hundred thousand, eight hundred sixty-six".