9681629 has 2 divisors, whose sum is σ = 9681630. Its totient is φ = 9681628.

The previous prime is 9681613. The next prime is 9681649. The reversal of 9681629 is 9261869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7425625 + 2256004 = 2725^2 + 1502^2 .

It is an emirp because it is prime and its reverse (9261869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9681629 - 2⁴ = 9681613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9681649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4840814 + 4840815.

It is an arithmetic number, because the mean of its divisors is an integer number (4840815).

Almost surely, 2^9681629 is an apocalyptic number.

It is an amenable number.

9681629 is a deficient number, since it is larger than the sum of its proper divisors (1).

9681629 is an equidigital number, since it uses as much as digits as its factorization.

9681629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 9681629 is about 3111.5316164230. The cubic root of 9681629 is about 213.1324016831.

The spelling of 9681629 in words is "nine million, six hundred eighty-one thousand, six hundred twenty-nine".