6998489663 has 8 divisors (see below), whose sum is σ = 7639868160. Its totient is φ = 6357969880.

The previous prime is 6998489609. The next prime is 6998489689. The reversal of 6998489663 is 3669848996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6998489663 - 2¹² = 6998485567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6998489593 and 6998489602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6998480663) 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 7 ways as a sum of consecutive naturals, for example, 197573 + ... + 230286.

It is an arithmetic number, because the mean of its divisors is an integer number (954983520).

Almost surely, 2^6998489663 is an apocalyptic number.

6998489663 is a deficient number, since it is larger than the sum of its proper divisors (641378497).

6998489663 is a wasteful number, since it uses less digits than its factorization.

6998489663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429357.

The product of its digits is 120932352, while the sum is 68.

The square root of 6998489663 is about 83656.9761765270. The cubic root of 6998489663 is about 1912.7935933171.

The spelling of 6998489663 in words is "six billion, nine hundred ninety-eight million, four hundred eighty-nine thousand, six hundred sixty-three".