4631687647 has 2 divisors, whose sum is σ = 4631687648. Its totient is φ = 4631687646.

The previous prime is 4631687611. The next prime is 4631687651. The reversal of 4631687647 is 7467861364.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4631687647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4631687594 and 4631687603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4631687677) 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, 2315843823 + 2315843824.

It is an arithmetic number, because the mean of its divisors is an integer number (2315843824).

Almost surely, 2^4631687647 is an apocalyptic number.

4631687647 is a deficient number, since it is larger than the sum of its proper divisors (1).

4631687647 is an equidigital number, since it uses as much as digits as its factorization.

4631687647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 52.

The square root of 4631687647 is about 68056.5033409740. The cubic root of 4631687647 is about 1666.9135921660.

The spelling of 4631687647 in words is "four billion, six hundred thirty-one million, six hundred eighty-seven thousand, six hundred forty-seven".