9679661 has 2 divisors, whose sum is σ = 9679662. Its totient is φ = 9679660.

The previous prime is 9679627. The next prime is 9679667. The reversal of 9679661 is 1669769.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 649636 = 3005^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 9679661 - 2⁶ = 9679597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9679667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4839830 + 4839831.

It is an arithmetic number, because the mean of its divisors is an integer number (4839831).

Almost surely, 2^9679661 is an apocalyptic number.

It is an amenable number.

9679661 is a deficient number, since it is larger than the sum of its proper divisors (1).

9679661 is an equidigital number, since it uses as much as digits as its factorization.

9679661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 9679661 is about 3111.2153573805. The cubic root of 9679661 is about 213.1179594513.

The spelling of 9679661 in words is "nine million, six hundred seventy-nine thousand, six hundred sixty-one".