6999667488 has 576 divisors, whose sum is σ = 24436339200. Its totient is φ = 1948354560.

The previous prime is 6999667481. The next prime is 6999667489. The reversal of 6999667488 is 8847669996.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (6999667481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 95885820 + ... + 95885892.

It is an arithmetic number, because the mean of its divisors is an integer number (42424200).

Almost surely, 2^6999667488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6999667488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12218169600).

6999667488 is an abundant number, since it is smaller than the sum of its proper divisors (17436671712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6999667488 is a wasteful number, since it uses less digits than its factorization.

6999667488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 167 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The square root of 6999667488 is about 83664.0154905321. The cubic root of 6999667488 is about 1912.9008931226.

The spelling of 6999667488 in words is "six billion, nine hundred ninety-nine million, six hundred sixty-seven thousand, four hundred eighty-eight".