8447616 has 48 divisors (see below), whose sum is σ = 24312210. Its totient is φ = 2815488.

The previous prime is 8447611. The next prime is 8447627. The reversal of 8447616 is 6167448.

It can be written as a sum of positive squares in only one way, i.e., 8433216 + 14400 = 2904^2 + 120^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (8447611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515 + ... + 4818.

Almost surely, 2^8447616 is an apocalyptic number.

It is an amenable number.

8447616 is an abundant number, since it is smaller than the sum of its proper divisors (15864594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8447616 is a wasteful number, since it uses less digits than its factorization.

8447616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7353 (or 7338 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 8447616 is about 2906.4782813570. The cubic root of 8447616 is about 203.6626488952.

The spelling of 8447616 in words is "eight million, four hundred forty-seven thousand, six hundred sixteen".