9966511 has 2 divisors, whose sum is σ = 9966512. Its totient is φ = 9966510.

The previous prime is 9966503. The next prime is 9966529. The reversal of 9966511 is 1156699.

9966511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1156699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9966511 - 2³ = 9966503 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9966581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983255 + 4983256.

It is an arithmetic number, because the mean of its divisors is an integer number (4983256).

Almost surely, 2^9966511 is an apocalyptic number.

9966511 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966511 is an equidigital number, since it uses as much as digits as its factorization.

9966511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 37.

The square root of 9966511 is about 3156.9781437318. The cubic root of 9966511 is about 215.2027004885.

The spelling of 9966511 in words is "nine million, nine hundred sixty-six thousand, five hundred eleven".