6640110874 has 16 divisors (see below), whose sum is σ = 9997847496. Its totient is φ = 3307508800.

The previous prime is 6640110821. The next prime is 6640110901. The reversal of 6640110874 is 4780110466.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4879721025 + 1760389849 = 69855^2 + 41957^2 .

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, 1735884 + ... + 1739704.

Almost surely, 2^6640110874 is an apocalyptic number.

6640110874 is a deficient number, since it is larger than the sum of its proper divisors (3357736622).

6640110874 is a wasteful number, since it uses less digits than its factorization.

6640110874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6881.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 6640110874 is about 81486.8754708389. The cubic root of 6640110874 is about 1879.5697364914.

The spelling of 6640110874 in words is "six billion, six hundred forty million, one hundred ten thousand, eight hundred seventy-four".