8405648 has 10 divisors (see below), whose sum is σ = 16285974. Its totient is φ = 4202816.

The previous prime is 8405647. The next prime is 8405651. The reversal of 8405648 is 8465048.

It can be written as a sum of positive squares in only one way, i.e., 4276624 + 4129024 = 2068^2 + 2032^2 .

It is not an unprimeable number, because it can be changed into a prime (8405647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262661 + ... + 262692.

Almost surely, 2^8405648 is an apocalyptic number.

It is an amenable number.

8405648 is a deficient number, since it is larger than the sum of its proper divisors (7880326).

8405648 is a wasteful number, since it uses less digits than its factorization.

8405648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525361 (or 525355 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 8405648 is about 2899.2495580753. The cubic root of 8405648 is about 203.3248215255.

The spelling of 8405648 in words is "eight million, four hundred five thousand, six hundred forty-eight".