8215616 has 28 divisors (see below), whose sum is σ = 16439388. Its totient is φ = 4073472.

The previous prime is 8215601. The next prime is 8215633. The reversal of 8215616 is 6165128.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2262016 + 5953600 = 1504^2 + 2440^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8300 + ... + 9236.

It is an arithmetic number, because the mean of its divisors is an integer number (587121).

Almost surely, 2^8215616 is an apocalyptic number.

It is an amenable number.

8215616 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

8215616 is a wasteful number, since it uses less digits than its factorization.

8215616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1076 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 8215616 is about 2866.2895876028. The cubic root of 8215616 is about 201.7808949962.

The spelling of 8215616 in words is "eight million, two hundred fifteen thousand, six hundred sixteen".