6670400404 has 24 divisors (see below), whose sum is σ = 12152940968. Its totient is φ = 3200601600.

The previous prime is 6670400393. The next prime is 6670400419. The reversal of 6670400404 is 4040040766.

It can be written as a sum of positive squares in 4 ways, for example, as 1275204100 + 5395196304 = 35710^2 + 73452^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297897 + ... + 319504.

Almost surely, 2^6670400404 is an apocalyptic number.

It is an amenable number.

6670400404 is a deficient number, since it is larger than the sum of its proper divisors (5482540564).

6670400404 is a wasteful number, since it uses less digits than its factorization.

6670400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617515 (or 617513 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 6670400404 is about 81672.5192705600. The cubic root of 6670400404 is about 1882.4233503238.

The spelling of 6670400404 in words is "six billion, six hundred seventy million, four hundred thousand, four hundred four".