6620905503 has 12 divisors (see below), whose sum is σ = 9564645688. Its totient is φ = 4413422160.

The previous prime is 6620905481. The next prime is 6620905513. The reversal of 6620905503 is 3055090266.

6620905503 is a `hidden beast` number, since 6 + 62 + 0 + 90 + 5 + 503 = 666.

6620905503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6620905503 - 2²⁴ = 6604128287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620905513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48876 + ... + 125022.

Almost surely, 2^6620905503 is an apocalyptic number.

6620905503 is a deficient number, since it is larger than the sum of its proper divisors (2943740185).

6620905503 is a wasteful number, since it uses less digits than its factorization.

6620905503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85814 (or 85811 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 6620905503 is about 81368.9467979032. The cubic root of 6620905503 is about 1877.7558765990.

Adding to 6620905503 its reverse (3055090266), we get a palindrome (9675995769).

The spelling of 6620905503 in words is "six billion, six hundred twenty million, nine hundred five thousand, five hundred three".