7643695643 has 2 divisors, whose sum is σ = 7643695644. Its totient is φ = 7643695642.

The previous prime is 7643695597. The next prime is 7643695673. The reversal of 7643695643 is 3465963467.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3465963467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7643695643 - 2¹⁴ = 7643679259 is a prime.

It is not a weakly prime, because it can be changed into another prime (7643695673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821847821 + 3821847822.

It is an arithmetic number, because the mean of its divisors is an integer number (3821847822).

Almost surely, 2^7643695643 is an apocalyptic number.

7643695643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7643695643 is an equidigital number, since it uses as much as digits as its factorization.

7643695643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 53.

The square root of 7643695643 is about 87428.2313843761. The cubic root of 7643695643 is about 1969.8559200458.

The spelling of 7643695643 in words is "seven billion, six hundred forty-three million, six hundred ninety-five thousand, six hundred forty-three".