5247889665 has 16 divisors (see below), whose sum is σ = 8436422976. Its totient is φ = 2785608000.

The previous prime is 5247889649. The next prime is 5247889667. The reversal of 5247889665 is 5669887425.

It is not a de Polignac number, because 5247889665 - 2⁴ = 5247889649 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5247889599 and 5247889608.

It is not an unprimeable number, because it can be changed into a prime (5247889667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825886 + ... + 832215.

It is an arithmetic number, because the mean of its divisors is an integer number (527276436).

Almost surely, 2^5247889665 is an apocalyptic number.

It is an amenable number.

5247889665 is a deficient number, since it is larger than the sum of its proper divisors (3188533311).

5247889665 is a wasteful number, since it uses less digits than its factorization.

5247889665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658320.

The product of its digits is 29030400, while the sum is 60.

The square root of 5247889665 is about 72442.3195721948. The cubic root of 5247889665 is about 1737.7804156559.

The spelling of 5247889665 in words is "five billion, two hundred forty-seven million, eight hundred eighty-nine thousand, six hundred sixty-five".