6544004620 has 48 divisors (see below), whose sum is σ = 14355569088. Its totient is φ = 2501058560.

The previous prime is 6544004587. The next prime is 6544004639. The reversal of 6544004620 is 264004456.

It is a super-3 number, since 3×6544004620³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442140 + ... + 456700.

It is an arithmetic number, because the mean of its divisors is an integer number (299074356).

Almost surely, 2^6544004620 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 6544004620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7177784544).

6544004620 is an abundant number, since it is smaller than the sum of its proper divisors (7811564468).

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

6544004620 is a wasteful number, since it uses less digits than its factorization.

6544004620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570 (or 15568 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 6544004620 is about 80895.0222201589. The cubic root of 6544004620 is about 1870.4575905546.

The spelling of 6544004620 in words is "six billion, five hundred forty-four million, four thousand, six hundred twenty".