866040248 has 32 divisors (see below), whose sum is σ = 1726544160. Its totient is φ = 405841920.

The previous prime is 866040247. The next prime is 866040251. The reversal of 866040248 is 842040668.

It is a happy number.

It is a super-2 number, since 2×866040248² = 1500051422311803008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866040247) 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, 19565 + ... + 45987.

It is an arithmetic number, because the mean of its divisors is an integer number (53954505).

Almost surely, 2^866040248 is an apocalyptic number.

It is an amenable number.

866040248 is a deficient number, since it is larger than the sum of its proper divisors (860503912).

866040248 is a wasteful number, since it uses less digits than its factorization.

866040248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26687 (or 26683 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 866040248 is about 29428.5617725366. The cubic root of 866040248 is about 953.1897390236.

The spelling of 866040248 in words is "eight hundred sixty-six million, forty thousand, two hundred forty-eight".