866745446 has 16 divisors (see below), whose sum is σ = 1537086240. Its totient is φ = 358653120.

The previous prime is 866745443. The next prime is 866745463. The reversal of 866745446 is 644547668.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 866745394 and 866745403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866745443) by changing a digit.

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, 1067015 + ... + 1067826.

It is an arithmetic number, because the mean of its divisors is an integer number (96067890).

Almost surely, 2^866745446 is an apocalyptic number.

866745446 is a deficient number, since it is larger than the sum of its proper divisors (670340794).

866745446 is a wasteful number, since it uses less digits than its factorization.

866745446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134879.

The product of its digits is 3870720, while the sum is 50.

The square root of 866745446 is about 29440.5408578035. The cubic root of 866745446 is about 953.4483894856.

The spelling of 866745446 in words is "eight hundred sixty-six million, seven hundred forty-five thousand, four hundred forty-six".