9629681 has 2 divisors, whose sum is σ = 9629682. Its totient is φ = 9629680.

The previous prime is 9629677. The next prime is 9629687. The reversal of 9629681 is 1869269.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 1478656 = 2855^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 9629681 - 2² = 9629677 is a prime.

It is a super-2 number, since 2×9629681² = 185461512323522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9629687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4814840 + 4814841.

It is an arithmetic number, because the mean of its divisors is an integer number (4814841).

Almost surely, 2^9629681 is an apocalyptic number.

It is an amenable number.

9629681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9629681 is an equidigital number, since it uses as much as digits as its factorization.

9629681 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 9629681 is about 3103.1727312543. The cubic root of 9629681 is about 212.7505216081.

The spelling of 9629681 in words is "nine million, six hundred twenty-nine thousand, six hundred eighty-one".