8247666 has 32 divisors (see below), whose sum is σ = 18938880. Its totient is φ = 2345616.

The previous prime is 8247661. The next prime is 8247697. The reversal of 8247666 is 6667428.

It is not an unprimeable number, because it can be changed into a prime (8247661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14805 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (591840).

Almost surely, 2^8247666 is an apocalyptic number.

8247666 is an abundant number, since it is smaller than the sum of its proper divisors (10691214).

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

8247666 is a wasteful number, since it uses less digits than its factorization.

8247666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its digits is 96768, while the sum is 39.

The square root of 8247666 is about 2871.8749972797. The cubic root of 8247666 is about 202.0429441749.

The spelling of 8247666 in words is "eight million, two hundred forty-seven thousand, six hundred sixty-six".