6647370604421 has 8 divisors (see below), whose sum is σ = 7002981814080. Its totient is φ = 6292334354688.

The previous prime is 6647370604409. The next prime is 6647370604423. The reversal of 6647370604421 is 1244060737466.

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

It is a de Polignac number, because none of the positive numbers 2^k-6647370604421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6647370604421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647370604423) 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 7 ways as a sum of consecutive naturals, for example, 143716241 + ... + 143762486.

It is an arithmetic number, because the mean of its divisors is an integer number (875372726760).

Almost surely, 2^{6647370604421} is an apocalyptic number.

It is an amenable number.

6647370604421 is a deficient number, since it is larger than the sum of its proper divisors (355611209659).

6647370604421 is a wasteful number, since it uses less digits than its factorization.

6647370604421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287479963.

The product of its (nonzero) digits is 4064256, while the sum is 50.

The spelling of 6647370604421 in words is "six trillion, six hundred forty-seven billion, three hundred seventy million, six hundred four thousand, four hundred twenty-one".