6216376720 has 20 divisors (see below), whose sum is σ = 14453076060. Its totient is φ = 2486550656.

The previous prime is 6216376717. The next prime is 6216376729. The reversal of 6216376720 is 276736126.

It can be written as a sum of positive squares in 2 ways, for example, as 4960666624 + 1255710096 = 70432^2 + 35436^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (6216376729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38852275 + ... + 38852434.

It is an arithmetic number, because the mean of its divisors is an integer number (722653803).

Almost surely, 2^6216376720 is an apocalyptic number.

It is an amenable number.

6216376720 is an abundant number, since it is smaller than the sum of its proper divisors (8236699340).

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

6216376720 is a wasteful number, since it uses less digits than its factorization.

6216376720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77704722 (or 77704716 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 6216376720 is about 78844.0024351884. The cubic root of 6216376720 is about 1838.7066288850.

The spelling of 6216376720 in words is "six billion, two hundred sixteen million, three hundred seventy-six thousand, seven hundred twenty".