866572412 has 24 divisors (see below), whose sum is σ = 1583902320. Its totient is φ = 414426240.

The previous prime is 866572393. The next prime is 866572451. The reversal of 866572412 is 214275668.

It is a self number, because there is not a number n which added to its sum of digits gives 866572412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40889 + ... + 58352.

It is an arithmetic number, because the mean of its divisors is an integer number (65995930).

Almost surely, 2^866572412 is an apocalyptic number.

It is an amenable number.

866572412 is a deficient number, since it is larger than the sum of its proper divisors (717329908).

866572412 is a wasteful number, since it uses less digits than its factorization.

866572412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99341 (or 99339 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 866572412 is about 29437.6020083158. The cubic root of 866572412 is about 953.3849375731.

The spelling of 866572412 in words is "eight hundred sixty-six million, five hundred seventy-two thousand, four hundred twelve".