8215716 has 12 divisors (see below), whose sum is σ = 19170032. Its totient is φ = 2738568.

The previous prime is 8215699. The next prime is 8215717. The reversal of 8215716 is 6175128.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (8215717) 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 3 ways as a sum of consecutive naturals, for example, 342310 + ... + 342333.

Almost surely, 2^8215716 is an apocalyptic number.

It is an amenable number.

8215716 is an abundant number, since it is smaller than the sum of its proper divisors (10954316).

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

8215716 is a wasteful number, since it uses less digits than its factorization.

8215716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684650 (or 684648 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 8215716 is about 2866.3070317047. The cubic root of 8215716 is about 201.7817136813.

The spelling of 8215716 in words is "eight million, two hundred fifteen thousand, seven hundred sixteen".