6648872587 has 4 divisors (see below), whose sum is σ = 7598711536. Its totient is φ = 5699033640.

The previous prime is 6648872563. The next prime is 6648872621. The reversal of 6648872587 is 7852788466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6648872587 - 2⁷ = 6648872459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6648872507) 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, 474919464 + ... + 474919477.

It is an arithmetic number, because the mean of its divisors is an integer number (1899677884).

Almost surely, 2^6648872587 is an apocalyptic number.

6648872587 is a deficient number, since it is larger than the sum of its proper divisors (949838949).

6648872587 is an equidigital number, since it uses as much as digits as its factorization.

6648872587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949838948.

The product of its digits is 36126720, while the sum is 61.

The square root of 6648872587 is about 81540.6192458703. The cubic root of 6648872587 is about 1880.3960787445.

The spelling of 6648872587 in words is "six billion, six hundred forty-eight million, eight hundred seventy-two thousand, five hundred eighty-seven".