866038366 has 12 divisors (see below), whose sum is σ = 1355850792. Its totient is φ = 414096804.

The previous prime is 866038363. The next prime is 866038379. The reversal of 866038366 is 663830668.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866038363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197425 + ... + 201763.

It is an arithmetic number, because the mean of its divisors is an integer number (112987566).

Almost surely, 2^866038366 is an apocalyptic number.

866038366 is a deficient number, since it is larger than the sum of its proper divisors (489812426).

866038366 is an frugal number, since it uses more digits than its factorization.

866038366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703 (or 4364 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 866038366 is about 29428.5297967805. The cubic root of 866038366 is about 953.1890485613.

Multiplying 866038366 by its sum of digits (46), we get a square (39837764836 = 199594²).

866038366 divided by its sum of digits (46) gives a square (18826921 = 4339²).

The spelling of 866038366 in words is "eight hundred sixty-six million, thirty-eight thousand, three hundred sixty-six".