9666131 has 2 divisors, whose sum is σ = 9666132. Its totient is φ = 9666130.

The previous prime is 9666109. The next prime is 9666143. The reversal of 9666131 is 1316669.

It is a strong prime.

It is an emirp because it is prime and its reverse (1316669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9666131 - 2¹⁰ = 9665107 is a prime.

It is a super-2 number, since 2×9666131² = 186868177018322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9666101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833065 + 4833066.

It is an arithmetic number, because the mean of its divisors is an integer number (4833066).

Almost surely, 2^9666131 is an apocalyptic number.

9666131 is a deficient number, since it is larger than the sum of its proper divisors (1).

9666131 is an equidigital number, since it uses as much as digits as its factorization.

9666131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 9666131 is about 3109.0402055940. The cubic root of 9666131 is about 213.0186160781.

The spelling of 9666131 in words is "nine million, six hundred sixty-six thousand, one hundred thirty-one".