9668551 has 2 divisors, whose sum is σ = 9668552. Its totient is φ = 9668550.

The previous prime is 9668539. The next prime is 9668557. The reversal of 9668551 is 1558669.

9668551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9668551 - 2⁹ = 9668039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9668557) 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, 4834275 + 4834276.

It is an arithmetic number, because the mean of its divisors is an integer number (4834276).

Almost surely, 2^9668551 is an apocalyptic number.

9668551 is a deficient number, since it is larger than the sum of its proper divisors (1).

9668551 is an equidigital number, since it uses as much as digits as its factorization.

9668551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 9668551 is about 3109.4293688714. The cubic root of 9668551 is about 213.0363916161.

The spelling of 9668551 in words is "nine million, six hundred sixty-eight thousand, five hundred fifty-one".