6220766880 has 144 divisors (see below), whose sum is σ = 21629167560. Its totient is φ = 1627551744.

The previous prime is 6220766879. The next prime is 6220766897. The reversal of 6220766880 is 886670226.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6007490064 + 213276816 = 77508^2 + 14604^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35566 + ... + 117074.

Almost surely, 2^6220766880 is an apocalyptic number.

6220766880 is a gapful number since it is divisible by the number (60) 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 6220766880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10814583780).

6220766880 is an abundant number, since it is smaller than the sum of its proper divisors (15408400680).

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

6220766880 is a wasteful number, since it uses less digits than its factorization.

6220766880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81583 (or 81572 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 6220766880 is about 78871.8383201507. The cubic root of 6220766880 is about 1839.1393738282.

The spelling of 6220766880 in words is "six billion, two hundred twenty million, seven hundred sixty-six thousand, eight hundred eighty".