6720047 has 2 divisors, whose sum is σ = 6720048. Its totient is φ = 6720046.

The previous prime is 6720011. The next prime is 6720059. The reversal of 6720047 is 7400276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6720047 - 2⁶ = 6719983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6719998 and 6720025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6720947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360023 + 3360024.

It is an arithmetic number, because the mean of its divisors is an integer number (3360024).

Almost surely, 2^6720047 is an apocalyptic number.

6720047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720047 is an equidigital number, since it uses as much as digits as its factorization.

6720047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 6720047 is about 2592.3053446691. The cubic root of 6720047 is about 188.7081991553.

The spelling of 6720047 in words is "six million, seven hundred twenty thousand, forty-seven".