9747666 has 12 divisors (see below), whose sum is σ = 21119982. Its totient is φ = 3249216.

The previous prime is 9747643. The next prime is 9747667. The reversal of 9747666 is 6667479.

9747666 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7868025 + 1879641 = 2805^2 + 1371^2 .

It is not an unprimeable number, because it can be changed into a prime (9747667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270751 + ... + 270786.

Almost surely, 2^9747666 is an apocalyptic number.

9747666 is an abundant number, since it is smaller than the sum of its proper divisors (11372316).

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

9747666 is a wasteful number, since it uses less digits than its factorization.

9747666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541545 (or 541542 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 9747666 is about 3122.1252377187. The cubic root of 9747666 is about 213.6158859119.

The spelling of 9747666 in words is "nine million, seven hundred forty-seven thousand, six hundred sixty-six".