6620771 has 2 divisors, whose sum is σ = 6620772. Its totient is φ = 6620770.

The previous prime is 6620741. The next prime is 6620777. The reversal of 6620771 is 1770266.

6620771 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6620771 - 2¹⁰ = 6619747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6620777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310385 + 3310386.

It is an arithmetic number, because the mean of its divisors is an integer number (3310386).

Almost surely, 2^6620771 is an apocalyptic number.

6620771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6620771 is an equidigital number, since it uses as much as digits as its factorization.

6620771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 6620771 is about 2573.0858905213. The cubic root of 6620771 is about 187.7743161042.

The spelling of 6620771 in words is "six million, six hundred twenty thousand, seven hundred seventy-one".