6988365641 has 2 divisors, whose sum is σ = 6988365642. Its totient is φ = 6988365640.

The previous prime is 6988365607. The next prime is 6988365647. The reversal of 6988365641 is 1465638896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5511577600 + 1476788041 = 74240^2 + 38429^2 .

It is a cyclic number.

It is not a de Polignac number, because 6988365641 - 2¹⁸ = 6988103497 is a prime.

It is not a weakly prime, because it can be changed into another prime (6988365647) 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, 3494182820 + 3494182821.

It is an arithmetic number, because the mean of its divisors is an integer number (3494182821).

Almost surely, 2^6988365641 is an apocalyptic number.

It is an amenable number.

6988365641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6988365641 is an equidigital number, since it uses as much as digits as its factorization.

6988365641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 56.

The square root of 6988365641 is about 83596.4451457118. The cubic root of 6988365641 is about 1911.8707985069.

The spelling of 6988365641 in words is "six billion, nine hundred eighty-eight million, three hundred sixty-five thousand, six hundred forty-one".