9616987637 has 2 divisors, whose sum is σ = 9616987638. Its totient is φ = 9616987636.

The previous prime is 9616987619. The next prime is 9616987687. The reversal of 9616987637 is 7367896169.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6337592881 + 3279394756 = 79609^2 + 57266^2 .

It is a cyclic number.

It is not a de Polignac number, because 9616987637 - 2¹⁴ = 9616971253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9616987637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9616987607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4808493818 + 4808493819.

It is an arithmetic number, because the mean of its divisors is an integer number (4808493819).

Almost surely, 2^9616987637 is an apocalyptic number.

It is an amenable number.

9616987637 is a deficient number, since it is larger than the sum of its proper divisors (1).

9616987637 is an equidigital number, since it uses as much as digits as its factorization.

9616987637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The square root of 9616987637 is about 98066.2410669441. The cubic root of 9616987637 is about 2126.5700147891.

The spelling of 9616987637 in words is "nine billion, six hundred sixteen million, nine hundred eighty-seven thousand, six hundred thirty-seven".