6605421974 has 16 divisors (see below), whose sum is σ = 9949065840. Its totient is φ = 3289094400.

The previous prime is 6605421947. The next prime is 6605421997. The reversal of 6605421974 is 4791245066.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509282 + ... + 522090.

It is an arithmetic number, because the mean of its divisors is an integer number (621816615).

Almost surely, 2^6605421974 is an apocalyptic number.

6605421974 is a deficient number, since it is larger than the sum of its proper divisors (3343643866).

6605421974 is a wasteful number, since it uses less digits than its factorization.

6605421974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 6605421974 is about 81273.7471389132. The cubic root of 6605421974 is about 1876.2909721763.

The spelling of 6605421974 in words is "six billion, six hundred five million, four hundred twenty-one thousand, nine hundred seventy-four".