6620531253 has 32 divisors (see below), whose sum is σ = 10136420352. Its totient is φ = 3765216000.

The previous prime is 6620531251. The next prime is 6620531261. The reversal of 6620531253 is 3521350266.

6620531253 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 6620531253 - 2¹ = 6620531251 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620531251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7266868 + ... + 7267778.

It is an arithmetic number, because the mean of its divisors is an integer number (316763136).

Almost surely, 2^6620531253 is an apocalyptic number.

It is an amenable number.

6620531253 is a deficient number, since it is larger than the sum of its proper divisors (3515889099).

6620531253 is a wasteful number, since it uses less digits than its factorization.

6620531253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 6620531253 is about 81366.6470551663. The cubic root of 6620531253 is about 1877.7204955686.

The spelling of 6620531253 in words is "six billion, six hundred twenty million, five hundred thirty-one thousand, two hundred fifty-three".