866118903 has 16 divisors (see below), whose sum is σ = 1277272416. Its totient is φ = 518590080.

The previous prime is 866118893. The next prime is 866119021. The reversal of 866118903 is 309811668.

It is not a de Polignac number, because 866118903 - 2¹⁶ = 866053367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866118203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298668 + ... + 301553.

It is an arithmetic number, because the mean of its divisors is an integer number (79829526).

Almost surely, 2^866118903 is an apocalyptic number.

866118903 is a deficient number, since it is larger than the sum of its proper divisors (411153513).

866118903 is a wasteful number, since it uses less digits than its factorization.

866118903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600274.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 866118903 is about 29429.8981139929. The cubic root of 866118903 is about 953.2185948300.

The spelling of 866118903 in words is "eight hundred sixty-six million, one hundred eighteen thousand, nine hundred three".