7066868816 has 80 divisors (see below), whose sum is σ = 16501800960. Its totient is φ = 2864004480.

The previous prime is 7066868813. The next prime is 7066868819. The reversal of 7066868816 is 6188686607.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7066868813) and next prime (7066868819).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7066868813) 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 15 ways as a sum of consecutive naturals, for example, 1288961 + ... + 1294431.

It is an arithmetic number, because the mean of its divisors is an integer number (206272512).

Almost surely, 2^7066868816 is an apocalyptic number.

7066868816 is a gapful number since it is divisible by the number (76) 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 7066868816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8250900480).

7066868816 is an abundant number, since it is smaller than the sum of its proper divisors (9434932144).

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

7066868816 is a wasteful number, since it uses less digits than its factorization.

7066868816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112 (or 6106 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 7066868816 is about 84064.6704388948. The cubic root of 7066868816 is about 1919.0031008262.

The spelling of 7066868816 in words is "seven billion, sixty-six million, eight hundred sixty-eight thousand, eight hundred sixteen".