866356885 has 8 divisors (see below), whose sum is σ = 1057249440. Its totient is φ = 681338064.

The previous prime is 866356853. The next prime is 866356903. The reversal of 866356885 is 588653668.

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

It is a cyclic number.

It is not a de Polignac number, because 866356885 - 2⁵ = 866356853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468107 + ... + 1468696.

It is an arithmetic number, because the mean of its divisors is an integer number (132156180).

Almost surely, 2^866356885 is an apocalyptic number.

It is an amenable number.

866356885 is a deficient number, since it is larger than the sum of its proper divisors (190892555).

866356885 is a wasteful number, since it uses less digits than its factorization.

866356885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936867.

The product of its digits is 8294400, while the sum is 55.

The square root of 866356885 is about 29433.9410375165. The cubic root of 866356885 is about 953.3058915792.

The spelling of 866356885 in words is "eight hundred sixty-six million, three hundred fifty-six thousand, eight hundred eighty-five".