6420600 has 192 divisors, whose sum is σ = 23436000. Its totient is φ = 1612800.

The previous prime is 6420599. The next prime is 6420683. The reversal of 6420600 is 60246.

6420600 is a `hidden beast` number, since 64 + 2 + 0 + 600 = 666.

6420600 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156580 + ... + 156620.

Almost surely, 2^6420600 is an apocalyptic number.

6420600 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 6420600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11718000).

6420600 is an abundant number, since it is smaller than the sum of its proper divisors (17015400).

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

6420600 is a wasteful number, since it uses less digits than its factorization.

6420600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6420600 is about 2533.8902896534. The cubic root of 6420600 is about 185.8625415200.

Adding to 6420600 its reverse (60246), we get a palindrome (6480846).

The spelling of 6420600 in words is "six million, four hundred twenty thousand, six hundred".