6619863671 has 2 divisors, whose sum is σ = 6619863672. Its totient is φ = 6619863670.

The previous prime is 6619863667. The next prime is 6619863683. The reversal of 6619863671 is 1763689166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6619863671 - 2² = 6619863667 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6619860671) 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, 3309931835 + 3309931836.

It is an arithmetic number, because the mean of its divisors is an integer number (3309931836).

Almost surely, 2^6619863671 is an apocalyptic number.

6619863671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6619863671 is an equidigital number, since it uses as much as digits as its factorization.

6619863671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 6619863671 is about 81362.5446443264. The cubic root of 6619863671 is about 1877.6573800626.

The spelling of 6619863671 in words is "six billion, six hundred nineteen million, eight hundred sixty-three thousand, six hundred seventy-one".