5645375987 has 2 divisors, whose sum is σ = 5645375988. Its totient is φ = 5645375986.

The previous prime is 5645375951. The next prime is 5645376017. The reversal of 5645375987 is 7895735465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5645375987 - 2¹⁰ = 5645374963 is a prime.

It is not a weakly prime, because it can be changed into another prime (5645375917) 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, 2822687993 + 2822687994.

It is an arithmetic number, because the mean of its divisors is an integer number (2822687994).

Almost surely, 2^5645375987 is an apocalyptic number.

5645375987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645375987 is an equidigital number, since it uses as much as digits as its factorization.

5645375987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752000, while the sum is 59.

The square root of 5645375987 is about 75135.7171190906. The cubic root of 5645375987 is about 1780.5914782028.

The spelling of 5645375987 in words is "five billion, six hundred forty-five million, three hundred seventy-five thousand, nine hundred eighty-seven".