9885761 has 2 divisors, whose sum is σ = 9885762. Its totient is φ = 9885760.

The previous prime is 9885749. The next prime is 9885763. The reversal of 9885761 is 1675889.

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., 7529536 + 2356225 = 2744^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 9885761 - 2²² = 5691457 is a prime.

It is a Sophie Germain prime.

Together with 9885763, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9885763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942880 + 4942881.

It is an arithmetic number, because the mean of its divisors is an integer number (4942881).

Almost surely, 2^9885761 is an apocalyptic number.

It is an amenable number.

9885761 is a deficient number, since it is larger than the sum of its proper divisors (1).

9885761 is an equidigital number, since it uses as much as digits as its factorization.

9885761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 44.

The square root of 9885761 is about 3144.1630046803. The cubic root of 9885761 is about 214.6199234134.

The spelling of 9885761 in words is "nine million, eight hundred eighty-five thousand, seven hundred sixty-one".