5642564647 has 2 divisors, whose sum is σ = 5642564648. Its totient is φ = 5642564646.

The previous prime is 5642564633. The next prime is 5642564657. The reversal of 5642564647 is 7464652465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5642564647 - 2⁷ = 5642564519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5642564647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642564617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821282323 + 2821282324.

It is an arithmetic number, because the mean of its divisors is an integer number (2821282324).

Almost surely, 2^5642564647 is an apocalyptic number.

5642564647 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642564647 is an equidigital number, since it uses as much as digits as its factorization.

5642564647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 49.

The square root of 5642564647 is about 75117.0063767187. The cubic root of 5642564647 is about 1780.2958569580.

The spelling of 5642564647 in words is "five billion, six hundred forty-two million, five hundred sixty-four thousand, six hundred forty-seven".