6641644410 has 48 divisors (see below), whose sum is σ = 17907847776. Its totient is φ = 1771104528.

The previous prime is 6641644403. The next prime is 6641644433. The reversal of 6641644410 is 144461466.

6641644410 is a `hidden beast` number, since 6 + 6 + 4 + 1 + 644 + 4 + 1 + 0 = 666.

It is a super-2 number, since 2×6641644410² = 88222880937768496200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1364164 + ... + 1369023.

It is an arithmetic number, because the mean of its divisors is an integer number (373080162).

Almost surely, 2^6641644410 is an apocalyptic number.

6641644410 is an abundant number, since it is smaller than the sum of its proper divisors (11266203366).

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

6641644410 is a wasteful number, since it uses less digits than its factorization.

6641644410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733209 (or 2733197 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 6641644410 is about 81496.2846392398. The cubic root of 6641644410 is about 1879.7144211230.

The spelling of 6641644410 in words is "six billion, six hundred forty-one million, six hundred forty-four thousand, four hundred ten".