6898008761 has 12 divisors (see below), whose sum is σ = 8059267620. Its totient is φ = 5886750240.

The previous prime is 6898008751. The next prime is 6898008779. The reversal of 6898008761 is 1678008986.

It can be written as a sum of positive squares in 2 ways, for example, as 5800345600 + 1097663161 = 76160^2 + 33131^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6898008761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6898008751) 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 in 11 ways as a sum of consecutive naturals, for example, 296150 + ... + 318591.

It is an arithmetic number, because the mean of its divisors is an integer number (671605635).

Almost surely, 2^6898008761 is an apocalyptic number.

It is an amenable number.

6898008761 is a deficient number, since it is larger than the sum of its proper divisors (1161258859).

6898008761 is a wasteful number, since it uses less digits than its factorization.

6898008761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614984 (or 614977 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 6898008761 is about 83054.2519140351. The cubic root of 6898008761 is about 1903.5951101640.

The spelling of 6898008761 in words is "six billion, eight hundred ninety-eight million, eight thousand, seven hundred sixty-one".