6720100 has 72 divisors (see below), whose sum is σ = 15936480. Its totient is φ = 2449920.

The previous prime is 6720089. The next prime is 6720143. The reversal of 6720100 is 10276.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100267 + ... + 100333.

It is an arithmetic number, because the mean of its divisors is an integer number (221340).

Almost surely, 2^6720100 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 6720100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7968240).

6720100 is an abundant number, since it is smaller than the sum of its proper divisors (9216380).

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

6720100 is a wasteful number, since it uses less digits than its factorization.

6720100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 6720100 is about 2592.3155672101. The cubic root of 6720100 is about 188.7086952584.

Adding to 6720100 its reverse (10276), we get a palindrome (6730376).

The spelling of 6720100 in words is "six million, seven hundred twenty thousand, one hundred".