9645629671 has 2 divisors, whose sum is σ = 9645629672. Its totient is φ = 9645629670.

The previous prime is 9645629647. The next prime is 9645629687. The reversal of 9645629671 is 1769265469.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1769265469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9645629671 - 2²¹ = 9643532519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9645629611) 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, 4822814835 + 4822814836.

It is an arithmetic number, because the mean of its divisors is an integer number (4822814836).

Almost surely, 2^9645629671 is an apocalyptic number.

9645629671 is a deficient number, since it is larger than the sum of its proper divisors (1).

9645629671 is an equidigital number, since it uses as much as digits as its factorization.

9645629671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 9645629671 is about 98212.1666139181. The cubic root of 9645629671 is about 2128.6790924827.

The spelling of 9645629671 in words is "nine billion, six hundred forty-five million, six hundred twenty-nine thousand, six hundred seventy-one".