9613987 has 2 divisors, whose sum is σ = 9613988. Its totient is φ = 9613986.

The previous prime is 9613979. The next prime is 9614029. The reversal of 9613987 is 7893169.

It is a weak prime.

It is an emirp because it is prime and its reverse (7893169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9613987 - 2³ = 9613979 is a prime.

It is not a weakly prime, because it can be changed into another prime (9613907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4806993 + 4806994.

It is an arithmetic number, because the mean of its divisors is an integer number (4806994).

Almost surely, 2^9613987 is an apocalyptic number.

9613987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9613987 is an equidigital number, since it uses as much as digits as its factorization.

9613987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 9613987 is about 3100.6429978313. The cubic root of 9613987 is about 212.6348818413.

The spelling of 9613987 in words is "nine million, six hundred thirteen thousand, nine hundred eighty-seven".