6646572253 has 8 divisors (see below), whose sum is σ = 6763946400. Its totient is φ = 6529355568.

The previous prime is 6646572239. The next prime is 6646572259. The reversal of 6646572253 is 3522756466.

6646572253 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6646572253 - 2¹⁷ = 6646441181 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 (6646572259) 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, 47475 + ... + 124687.

It is an arithmetic number, because the mean of its divisors is an integer number (845493300).

Almost surely, 2^6646572253 is an apocalyptic number.

It is an amenable number.

6646572253 is a deficient number, since it is larger than the sum of its proper divisors (117374147).

6646572253 is a wasteful number, since it uses less digits than its factorization.

6646572253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78731.

The product of its digits is 1814400, while the sum is 46.

The square root of 6646572253 is about 81526.5125771979. The cubic root of 6646572253 is about 1880.1791979669.

The spelling of 6646572253 in words is "six billion, six hundred forty-six million, five hundred seventy-two thousand, two hundred fifty-three".