6641887752 has 48 divisors (see below), whose sum is σ = 18205190640. Its totient is φ = 2187286368.

The previous prime is 6641887739. The next prime is 6641887757. The reversal of 6641887752 is 2577881466.

It is a super-2 number, since 2×6641887752² = 88229345820335227008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6641887757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549738 + ... + 561689.

It is an arithmetic number, because the mean of its divisors is an integer number (379274805).

Almost surely, 2^6641887752 is an apocalyptic number.

It is an amenable number.

6641887752 is an abundant number, since it is smaller than the sum of its proper divisors (11563302888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6641887752 is a wasteful number, since it uses less digits than its factorization.

6641887752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111522 (or 1111515 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 6641887752 is about 81497.7775893306. Note that the first 3 decimals coincide. The cubic root of 6641887752 is about 1879.7373776808.

The spelling of 6641887752 in words is "six billion, six hundred forty-one million, eight hundred eighty-seven thousand, seven hundred fifty-two".