6720133 has 4 divisors (see below), whose sum is σ = 7680160. Its totient is φ = 5760108.

The previous prime is 6720089. The next prime is 6720143. The reversal of 6720133 is 3310276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6720133 - 2⁹ = 6719621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480003 + ... + 480016.

It is an arithmetic number, because the mean of its divisors is an integer number (1920040).

Almost surely, 2^6720133 is an apocalyptic number.

It is an amenable number.

6720133 is a deficient number, since it is larger than the sum of its proper divisors (960027).

6720133 is an equidigital number, since it uses as much as digits as its factorization.

6720133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960026.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 6720133 is about 2592.3219321681. The cubic root of 6720133 is about 188.7090041515.

The spelling of 6720133 in words is "six million, seven hundred twenty thousand, one hundred thirty-three".