6220868864 has 144 divisors (see below), whose sum is σ = 14601420288. Its totient is φ = 2589966336.

The previous prime is 6220868839. The next prime is 6220868873. The reversal of 6220868864 is 4688680226.

It is a congruent number.

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, 19624034 + ... + 19624350.

It is an arithmetic number, because the mean of its divisors is an integer number (101398752).

Almost surely, 2^6220868864 is an apocalyptic number.

6220868864 is a gapful number since it is divisible by the number (64) 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 6220868864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7300710144).

6220868864 is an abundant number, since it is smaller than the sum of its proper divisors (8380551424).

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

6220868864 is a wasteful number, since it uses less digits than its factorization.

6220868864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 50.

The square root of 6220868864 is about 78872.4848347001. The cubic root of 6220868864 is about 1839.1494241306.

It can be divided in two parts, 62208 and 68864, that added together give a 17-th power (131072 = 2¹⁷).

The spelling of 6220868864 in words is "six billion, two hundred twenty million, eight hundred sixty-eight thousand, eight hundred sixty-four".