8642743607 has 2 divisors, whose sum is σ = 8642743608. Its totient is φ = 8642743606.

The previous prime is 8642743597. The next prime is 8642743633. The reversal of 8642743607 is 7063472468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8642743607 - 2²⁰ = 8641695031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8642743657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321371803 + 4321371804.

It is an arithmetic number, because the mean of its divisors is an integer number (4321371804).

Almost surely, 2^8642743607 is an apocalyptic number.

8642743607 is a deficient number, since it is larger than the sum of its proper divisors (1).

8642743607 is an equidigital number, since it uses as much as digits as its factorization.

8642743607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The square root of 8642743607 is about 92966.3573934141. The cubic root of 8642743607 is about 2052.1883121914.

The spelling of 8642743607 in words is "eight billion, six hundred forty-two million, seven hundred forty-three thousand, six hundred seven".