6640884376 has 32 divisors (see below), whose sum is σ = 14243617440. Its totient is φ = 2843463168.

The previous prime is 6640884361. The next prime is 6640884421. The reversal of 6640884376 is 6734880466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6960 + ... + 115456.

It is an arithmetic number, because the mean of its divisors is an integer number (445113045).

Almost surely, 2^6640884376 is an apocalyptic number.

It is an amenable number.

6640884376 is an abundant number, since it is smaller than the sum of its proper divisors (7602733064).

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

6640884376 is a wasteful number, since it uses less digits than its factorization.

6640884376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109603 (or 109599 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 52.

The square root of 6640884376 is about 81491.6215079808. The cubic root of 6640884376 is about 1879.6427169244.

The spelling of 6640884376 in words is "six billion, six hundred forty million, eight hundred eighty-four thousand, three hundred seventy-six".