6620284660 has 96 divisors (see below), whose sum is σ = 15317205120. Its totient is φ = 2383603200.

The previous prime is 6620284651. The next prime is 6620284661. The reversal of 6620284660 is 664820266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620284661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16675582 + ... + 16675978.

It is an arithmetic number, because the mean of its divisors is an integer number (159554220).

Almost surely, 2^6620284660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6620284660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7658602560).

6620284660 is an abundant number, since it is smaller than the sum of its proper divisors (8696920460).

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

6620284660 is a wasteful number, since it uses less digits than its factorization.

6620284660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6620284660 is about 81365.1317211494. The cubic root of 6620284660 is about 1877.6971823096.

The spelling of 6620284660 in words is "six billion, six hundred twenty million, two hundred eighty-four thousand, six hundred sixty".