6222861216 has 432 divisors, whose sum is σ = 21366465120. Its totient is φ = 1702471680.

The previous prime is 6222861193. The next prime is 6222861277. The reversal of 6222861216 is 6121682226.

It is a happy number.

6222861216 is a `hidden beast` number, since 6 + 2 + 2 + 28 + 612 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31588030 + ... + 31588226.

It is an arithmetic number, because the mean of its divisors is an integer number (49459410).

Almost surely, 2^6222861216 is an apocalyptic number.

6222861216 is a gapful number since it is divisible by the number (66) 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 6222861216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10683232560).

6222861216 is an abundant number, since it is smaller than the sum of its proper divisors (15143603904).

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

6222861216 is a wasteful number, since it uses less digits than its factorization.

6222861216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 285 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 6222861216 is about 78885.1140330037. The cubic root of 6222861216 is about 1839.3457440768.

The spelling of 6222861216 in words is "six billion, two hundred twenty-two million, eight hundred sixty-one thousand, two hundred sixteen".