6640850875 has 8 divisors (see below), whose sum is σ = 8287782048. Its totient is φ = 5312680600.

The previous prime is 6640850863. The next prime is 6640850903. The reversal of 6640850875 is 5780580466.

It is not a de Polignac number, because 6640850875 - 2¹³ = 6640842683 is a prime.

It is a Duffinian 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, 26563279 + ... + 26563528.

It is an arithmetic number, because the mean of its divisors is an integer number (1035972756).

Almost surely, 2^6640850875 is an apocalyptic number.

6640850875 is a deficient number, since it is larger than the sum of its proper divisors (1646931173).

6640850875 is an equidigital number, since it uses as much as digits as its factorization.

6640850875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53126822 (or 53126812 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 6640850875 is about 81491.4159589831. The cubic root of 6640850875 is about 1879.6395562000.

The spelling of 6640850875 in words is "six billion, six hundred forty million, eight hundred fifty thousand, eight hundred seventy-five".