9661019 has 2 divisors, whose sum is σ = 9661020. Its totient is φ = 9661018.

The previous prime is 9661013. The next prime is 9661037. The reversal of 9661019 is 9101669.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9661019 is a prime.

It is a super-2 number, since 2×9661019² = 186670576236722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9661013) 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, 4830509 + 4830510.

It is an arithmetic number, because the mean of its divisors is an integer number (4830510).

Almost surely, 2^9661019 is an apocalyptic number.

9661019 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661019 is an equidigital number, since it uses as much as digits as its factorization.

9661019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 9661019 is about 3108.2179781991. The cubic root of 9661019 is about 212.9810573352.

The spelling of 9661019 in words is "nine million, six hundred sixty-one thousand, nineteen".