6989116868 has 6 divisors (see below), whose sum is σ = 12230954526. Its totient is φ = 3494558432.

The previous prime is 6989116861. The next prime is 6989116903. The reversal of 6989116868 is 8686119896.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4793069824 + 2196047044 = 69232^2 + 46862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6989116868.

It is not an unprimeable number, because it can be changed into a prime (6989116861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 873639605 + ... + 873639612.

It is an arithmetic number, because the mean of its divisors is an integer number (2038492421).

Almost surely, 2^6989116868 is an apocalyptic number.

It is an amenable number.

6989116868 is a deficient number, since it is larger than the sum of its proper divisors (5241837658).

6989116868 is a wasteful number, since it uses less digits than its factorization.

6989116868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747279221 (or 1747279219 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 6989116868 is about 83600.9382004772. The cubic root of 6989116868 is about 1911.9393027218.

The spelling of 6989116868 in words is "six billion, nine hundred eighty-nine million, one hundred sixteen thousand, eight hundred sixty-eight".