866906101 has 4 divisors (see below), whose sum is σ = 887066752. Its totient is φ = 846745452.

The previous prime is 866906071. The next prime is 866906111. The reversal of 866906101 is 101609668.

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 866906101 - 2¹¹ = 866904053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866906111) 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, 10080261 + ... + 10080346.

It is an arithmetic number, because the mean of its divisors is an integer number (221766688).

Almost surely, 2^866906101 is an apocalyptic number.

It is an amenable number.

866906101 is a deficient number, since it is larger than the sum of its proper divisors (20160651).

866906101 is a wasteful number, since it uses less digits than its factorization.

866906101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20160650.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 866906101 is about 29443.2691968810. The cubic root of 866906101 is about 953.5072944343.

The spelling of 866906101 in words is "eight hundred sixty-six million, nine hundred six thousand, one hundred one".