6605220500 has 48 divisors (see below), whose sum is σ = 15053036544. Its totient is φ = 2527210400.

The previous prime is 6605220491. The next prime is 6605220547. The reversal of 6605220500 is 50225066.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6605220500.

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, 275684 + ... + 298683.

It is an arithmetic number, because the mean of its divisors is an integer number (313604928).

Almost surely, 2^6605220500 is an apocalyptic number.

It is an amenable number.

6605220500 is an abundant number, since it is smaller than the sum of its proper divisors (8447816044).

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

6605220500 is a wasteful number, since it uses less digits than its factorization.

6605220500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574409 (or 574397 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 6605220500 is about 81272.5076517269. The cubic root of 6605220500 is about 1876.2718955404.

Adding to 6605220500 its reverse (50225066), we get a palindrome (6655445566).

The spelling of 6605220500 in words is "six billion, six hundred five million, two hundred twenty thousand, five hundred".