6640006846 has 32 divisors (see below), whose sum is σ = 11610228960. Its totient is φ = 2814566400.

The previous prime is 6640006843. The next prime is 6640006861. The reversal of 6640006846 is 6486000466.

It is a junction number, because it is equal to n+sod(n) for n = 6640006799 and 6640006808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640006843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40675 + ... + 122206.

It is an arithmetic number, because the mean of its divisors is an integer number (362819655).

Almost surely, 2^6640006846 is an apocalyptic number.

6640006846 is a deficient number, since it is larger than the sum of its proper divisors (4970222114).

6640006846 is a wasteful number, since it uses less digits than its factorization.

6640006846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163020.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6640006846 is about 81486.2371569580. The cubic root of 6640006846 is about 1879.5599209473.

The spelling of 6640006846 in words is "six billion, six hundred forty million, six thousand, eight hundred forty-six".