6621008760 has 96 divisors (see below), whose sum is σ = 21602309040. Its totient is φ = 1758707712.

The previous prime is 6621008759. The next prime is 6621008767. The reversal of 6621008760 is 678001266.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621008767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56739 + ... + 128301.

Almost surely, 2^6621008760 is an apocalyptic number.

6621008760 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 6621008760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10801154520).

6621008760 is an abundant number, since it is smaller than the sum of its proper divisors (14981300280).

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

6621008760 is a wasteful number, since it uses less digits than its factorization.

6621008760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71837 (or 71830 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 6621008760 is about 81369.5812942404. The cubic root of 6621008760 is about 1877.7656381254.

The spelling of 6621008760 in words is "six billion, six hundred twenty-one million, eight thousand, seven hundred sixty".