9966582 has 12 divisors (see below), whose sum is σ = 21594300. Its totient is φ = 3322188.

The previous prime is 9966581. The next prime is 9966587. The reversal of 9966582 is 2856699.

9966582 is a `hidden beast` number, since 9 + 9 + 66 + 582 = 666.

9966582 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 is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966581) 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, 276832 + ... + 276867.

It is an arithmetic number, because the mean of its divisors is an integer number (1799525).

Almost surely, 2^9966582 is an apocalyptic number.

9966582 is an abundant number, since it is smaller than the sum of its proper divisors (11627718).

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

9966582 is a wasteful number, since it uses less digits than its factorization.

9966582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553707 (or 553704 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 9966582 is about 3156.9893886423. The cubic root of 9966582 is about 215.2032115117.

The spelling of 9966582 in words is "nine million, nine hundred sixty-six thousand, five hundred eighty-two".