6604212420 has 144 divisors (see below), whose sum is σ = 22248817920. Its totient is φ = 1625629824.

The previous prime is 6604212409. The next prime is 6604212421. The reversal of 6604212420 is 242124066.

6604212420 is a `hidden beast` number, since 6 + 604 + 2 + 12 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6604212421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55077 + ... + 127443.

It is an arithmetic number, because the mean of its divisors is an integer number (154505680).

Almost surely, 2^6604212420 is an apocalyptic number.

6604212420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6604212420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11124408960).

6604212420 is an abundant number, since it is smaller than the sum of its proper divisors (15644605500).

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

6604212420 is a wasteful number, since it uses less digits than its factorization.

6604212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72411 (or 72390 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6604212420 is about 81266.3055638682. The cubic root of 6604212420 is about 1876.1764393073.

Adding to 6604212420 its reverse (242124066), we get a palindrome (6846336486).

It can be divided in two parts, 6604 and 212420, that added together give a square (219024 = 468²).

The spelling of 6604212420 in words is "six billion, six hundred four million, two hundred twelve thousand, four hundred twenty".