6566353660 has 48 divisors (see below), whose sum is σ = 14313922560. Its totient is φ = 2527571520.

The previous prime is 6566353631. The next prime is 6566353699. The reversal of 6566353660 is 663536656.

It is a self number, because there is not a number n which added to its sum of digits gives 6566353660.

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, 81397 + ... + 140563.

It is an arithmetic number, because the mean of its divisors is an integer number (298206720).

Almost surely, 2^6566353660 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 6566353660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7156961280).

6566353660 is an abundant number, since it is smaller than the sum of its proper divisors (7747568900).

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

6566353660 is a wasteful number, since it uses less digits than its factorization.

6566353660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59386 (or 59384 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 46.

The square root of 6566353660 is about 81033.0405451998. The cubic root of 6566353660 is about 1872.5844957988.

The spelling of 6566353660 in words is "six billion, five hundred sixty-six million, three hundred fifty-three thousand, six hundred sixty".