9647987 has 2 divisors, whose sum is σ = 9647988. Its totient is φ = 9647986.

The previous prime is 9647929. The next prime is 9648011. The reversal of 9647987 is 7897469.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9647987 - 2⁸ = 9647731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9647087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4823993 + 4823994.

It is an arithmetic number, because the mean of its divisors is an integer number (4823994).

Almost surely, 2^9647987 is an apocalyptic number.

9647987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9647987 is an equidigital number, since it uses as much as digits as its factorization.

9647987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 9647987 is about 3106.1208926891. The cubic root of 9647987 is about 212.8852490121.

The spelling of 9647987 in words is "nine million, six hundred forty-seven thousand, nine hundred eighty-seven".