6999162720 has 288 divisors, whose sum is σ = 24896489184. Its totient is φ = 1650401280.

The previous prime is 6999162719. The next prime is 6999162727. The reversal of 6999162720 is 272619996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999162727) 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 47 ways as a sum of consecutive naturals, for example, 2147332 + ... + 2150588.

It is an arithmetic number, because the mean of its divisors is an integer number (86446143).

Almost surely, 2^6999162720 is an apocalyptic number.

6999162720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6999162720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12448244592).

6999162720 is an abundant number, since it is smaller than the sum of its proper divisors (17897326464).

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

6999162720 is a wasteful number, since it uses less digits than its factorization.

6999162720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 6999162720 is about 83660.9987987234. The cubic root of 6999162720 is about 1912.8549102541.

The spelling of 6999162720 in words is "six billion, nine hundred ninety-nine million, one hundred sixty-two thousand, seven hundred twenty".