866906758256 has 40 divisors (see below), whose sum is σ = 2094086457984. Its totient is φ = 337755879360.

The previous prime is 866906758189. The next prime is 866906758259. The reversal of 866906758256 is 652857609668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866906758259) 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, 351827810 + ... + 351830273.

Almost surely, 2^866906758256 is an apocalyptic number.

It is an amenable number.

866906758256 is an abundant number, since it is smaller than the sum of its proper divisors (1227179699728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866906758256 is a wasteful number, since it uses less digits than its factorization.

866906758256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703658109 (or 703658103 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 866906758256 in words is "eight hundred sixty-six billion, nine hundred six million, seven hundred fifty-eight thousand, two hundred fifty-six".