6900210816 has 128 divisors (see below), whose sum is σ = 19010678400. Its totient is φ = 2214912000.

The previous prime is 6900210797. The next prime is 6900210827. The reversal of 6900210816 is 6180120096.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×6900210816² = 95225818610486771712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6692221 + ... + 6693251.

It is an arithmetic number, because the mean of its divisors is an integer number (148520925).

Almost surely, 2^6900210816 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 6900210816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9505339200).

6900210816 is an abundant number, since it is smaller than the sum of its proper divisors (12110467584).

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

6900210816 is a wasteful number, since it uses less digits than its factorization.

6900210816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1666 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 6900210816 is about 83067.5075826884. The cubic root of 6900210816 is about 1903.7976505058.

The spelling of 6900210816 in words is "six billion, nine hundred million, two hundred ten thousand, eight hundred sixteen".