6620500 has 24 divisors (see below), whose sum is σ = 14460264. Its totient is φ = 2648000.

The previous prime is 6620489. The next prime is 6620501. The reversal of 6620500 is 50266.

It can be written as a sum of positive squares in 4 ways, for example, as 138384 + 6482116 = 372^2 + 2546^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6121 + ... + 7120.

It is an arithmetic number, because the mean of its divisors is an integer number (602511).

Almost surely, 2^6620500 is an apocalyptic number.

It is an amenable number.

6620500 is an abundant number, since it is smaller than the sum of its proper divisors (7839764).

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

6620500 is a wasteful number, since it uses less digits than its factorization.

6620500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13260 (or 13248 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 6620500 is about 2573.0332294784. The cubic root of 6620500 is about 187.7717540897.

Adding to 6620500 its reverse (50266), we get a palindrome (6670766).

The spelling of 6620500 in words is "six million, six hundred twenty thousand, five hundred".