6506660600 has 96 divisors (see below), whose sum is σ = 16539120000. Its totient is φ = 2360918400.

The previous prime is 6506660591. The next prime is 6506660609. The reversal of 6506660600 is 60666056.

It is an interprime number because it is at equal distance from previous prime (6506660591) and next prime (6506660609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506660609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1094837 + ... + 1100763.

It is an arithmetic number, because the mean of its divisors is an integer number (172282500).

Almost surely, 2^6506660600 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 6506660600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8269560000).

6506660600 is an abundant number, since it is smaller than the sum of its proper divisors (10032459400).

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

6506660600 is a wasteful number, since it uses less digits than its factorization.

6506660600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453 (or 6444 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 6506660600 is about 80663.8741940901. The cubic root of 6506660600 is about 1866.8928162796.

The spelling of 6506660600 in words is "six billion, five hundred six million, six hundred sixty thousand, six hundred".