8664447 has 12 divisors (see below), whose sum is σ = 12698840. Its totient is φ = 5250960.

The previous prime is 8664433. The next prime is 8664451. The reversal of 8664447 is 7444668.

It is not a de Polignac number, because 8664447 - 2⁴ = 8664431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11572 + ... + 12297.

Almost surely, 2^8664447 is an apocalyptic number.

8664447 is a deficient number, since it is larger than the sum of its proper divisors (4034393).

8664447 is a wasteful number, since it uses less digits than its factorization.

8664447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23894 (or 23883 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 8664447 is about 2943.5432729960. The cubic root of 8664447 is about 205.3904673776.

The spelling of 8664447 in words is "eight million, six hundred sixty-four thousand, four hundred forty-seven".