6440005574 has 8 divisors (see below), whose sum is σ = 9666633720. Its totient is φ = 3217794336.

The previous prime is 6440005573. The next prime is 6440005601. The reversal of 6440005574 is 4755000446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440005573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100579 + ... + 1106414.

It is an arithmetic number, because the mean of its divisors is an integer number (1208329215).

Almost surely, 2^6440005574 is an apocalyptic number.

6440005574 is a deficient number, since it is larger than the sum of its proper divisors (3226628146).

6440005574 is a wasteful number, since it uses less digits than its factorization.

6440005574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208454.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 6440005574 is about 80249.6453200885. The cubic root of 6440005574 is about 1860.4960304602.

The spelling of 6440005574 in words is "six billion, four hundred forty million, five thousand, five hundred seventy-four".