863243166 has 16 divisors (see below), whose sum is σ = 1728123264. Its totient is φ = 287474904.

The previous prime is 863243159. The next prime is 863243167. The reversal of 863243166 is 661342368.

863243166 = 14689² + 14690² + ... + 14692².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863243167) 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, 61296 + ... + 74051.

It is an arithmetic number, because the mean of its divisors is an integer number (108007704).

Almost surely, 2^863243166 is an apocalyptic number.

863243166 is an abundant number, since it is smaller than the sum of its proper divisors (864880098).

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

863243166 is a wasteful number, since it uses less digits than its factorization.

863243166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136415.

The product of its digits is 124416, while the sum is 39.

The square root of 863243166 is about 29381.0000850890. Note that the first 4 decimals coincide. The cubic root of 863243166 is about 952.1624482982.

The spelling of 863243166 in words is "eight hundred sixty-three million, two hundred forty-three thousand, one hundred sixty-six".