864944705 has 8 divisors (see below), whose sum is σ = 1045510632. Its totient is φ = 686904448.

The previous prime is 864944701. The next prime is 864944711. The reversal of 864944705 is 507449468.

It can be written as a sum of positive squares in 4 ways, for example, as 323172529 + 541772176 = 17977^2 + 23276^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 864944705 - 2² = 864944701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864944705.

It is not an unprimeable number, because it can be changed into a prime (864944701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630662 + ... + 632031.

It is an arithmetic number, because the mean of its divisors is an integer number (130688829).

Almost surely, 2^864944705 is an apocalyptic number.

It is an amenable number.

864944705 is a deficient number, since it is larger than the sum of its proper divisors (180565927).

864944705 is a wasteful number, since it uses less digits than its factorization.

864944705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262835.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 864944705 is about 29409.9422814803. The cubic root of 864944705 is about 952.7876403186.

The spelling of 864944705 in words is "eight hundred sixty-four million, nine hundred forty-four thousand, seven hundred five".