866971055 has 8 divisors (see below), whose sum is σ = 1040644800. Its totient is φ = 693390496.

The previous prime is 866971051. The next prime is 866971097. The reversal of 866971055 is 550179668.

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 866971055 - 2² = 866971051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866971051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860 + ... + 41649.

It is an arithmetic number, because the mean of its divisors is an integer number (130080600).

Almost surely, 2^866971055 is an apocalyptic number.

866971055 is a deficient number, since it is larger than the sum of its proper divisors (173673745).

866971055 is a wasteful number, since it uses less digits than its factorization.

866971055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46593.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 866971055 is about 29444.3722126997. The cubic root of 866971055 is about 953.5311080730.

The spelling of 866971055 in words is "eight hundred sixty-six million, nine hundred seventy-one thousand, fifty-five".