6647370604420 has 1152 divisors, whose sum is σ = 19751552593920. Its totient is φ = 1853486530560.

The previous prime is 6647370604409. The next prime is 6647370604423. The reversal of 6647370604420 is 244060737466.

It is a super-2 number, since 2×6647370604420² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (6647370604423) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 38424107454 + ... + 38424107626.

It is an arithmetic number, because the mean of its divisors is an integer number (17145444960).

Almost surely, 2^{6647370604420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6647370604420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9875776296960).

6647370604420 is an abundant number, since it is smaller than the sum of its proper divisors (13104181989500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6647370604420 is a wasteful number, since it uses less digits than its factorization.

6647370604420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 6647370604420 in words is "six trillion, six hundred forty-seven billion, three hundred seventy million, six hundred four thousand, four hundred twenty".