6684987253 has 4 divisors (see below), whose sum is σ = 7639985440. Its totient is φ = 5729989068.

The previous prime is 6684987233. The next prime is 6684987269. The reversal of 6684987253 is 3527894866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6684987253 - 2¹³ = 6684979061 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 (6684987223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477499083 + ... + 477499096.

It is an arithmetic number, because the mean of its divisors is an integer number (1909996360).

Almost surely, 2^6684987253 is an apocalyptic number.

It is an amenable number.

6684987253 is a deficient number, since it is larger than the sum of its proper divisors (954998187).

6684987253 is an equidigital number, since it uses as much as digits as its factorization.

6684987253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954998186.

The product of its digits is 17418240, while the sum is 58.

The square root of 6684987253 is about 81761.7713421132. The cubic root of 6684987253 is about 1883.7945140848.

The spelling of 6684987253 in words is "six billion, six hundred eighty-four million, nine hundred eighty-seven thousand, two hundred fifty-three".