6420227100 has 144 divisors (see below), whose sum is σ = 21914597376. Its totient is φ = 1420128000.

The previous prime is 6420227081. The next prime is 6420227117. The reversal of 6420227100 is 17220246.

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, 15790 + ... + 114410.

It is an arithmetic number, because the mean of its divisors is an integer number (152184704).

Almost surely, 2^6420227100 is an apocalyptic number.

6420227100 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 6420227100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10957298688).

6420227100 is an abundant number, since it is smaller than the sum of its proper divisors (15494370276).

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

6420227100 is a wasteful number, since it uses less digits than its factorization.

6420227100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98676 (or 98669 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 6420227100 is about 80126.3196459191. The cubic root of 6420227100 is about 1858.5894323307.

Adding to 6420227100 its reverse (17220246), we get a palindrome (6437447346).

The spelling of 6420227100 in words is "six billion, four hundred twenty million, two hundred twenty-seven thousand, one hundred".