4887687691 has 2 divisors, whose sum is σ = 4887687692. Its totient is φ = 4887687690.

The previous prime is 4887687689. The next prime is 4887687709. The reversal of 4887687691 is 1967867884.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4887687691 - 2¹ = 4887687689 is a prime.

It is a super-2 number, since 2×4887687691² = 47778981929505822962, which contains 22 as substring.

Together with 4887687689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4887687631) 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 as a sum of consecutive naturals, namely, 2443843845 + 2443843846.

It is an arithmetic number, because the mean of its divisors is an integer number (2443843846).

Almost surely, 2^4887687691 is an apocalyptic number.

4887687691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4887687691 is an equidigital number, since it uses as much as digits as its factorization.

4887687691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32514048, while the sum is 64.

The square root of 4887687691 is about 69911.9996209521. Note that the first 3 decimals coincide. The cubic root of 4887687691 is about 1697.0754435477.

The spelling of 4887687691 in words is "four billion, eight hundred eighty-seven million, six hundred eighty-seven thousand, six hundred ninety-one".