9645629647 has 2 divisors, whose sum is σ = 9645629648. Its totient is φ = 9645629646.

The previous prime is 9645629611. The next prime is 9645629671. The reversal of 9645629647 is 7469265469.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9645629647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9645629591 and 9645629600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9645629687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4822814823 + 4822814824.

It is an arithmetic number, because the mean of its divisors is an integer number (4822814824).

Almost surely, 2^9645629647 is an apocalyptic number.

9645629647 is a deficient number, since it is larger than the sum of its proper divisors (1).

9645629647 is an equidigital number, since it uses as much as digits as its factorization.

9645629647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 58.

The square root of 9645629647 is about 98212.1664917336. The cubic root of 9645629647 is about 2128.6790907172.

The spelling of 9645629647 in words is "nine billion, six hundred forty-five million, six hundred twenty-nine thousand, six hundred forty-seven".