6620741 has 2 divisors, whose sum is σ = 6620742. Its totient is φ = 6620740.

The previous prime is 6620717. The next prime is 6620771. The reversal of 6620741 is 1470266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 519841 = 2470^2 + 721^2 .

It is a cyclic number.

It is not a de Polignac number, because 6620741 - 2¹⁴ = 6604357 is a prime.

It is a super-2 number, since 2×6620741² = 87668422778162, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6620741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6620771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310370 + 3310371.

It is an arithmetic number, because the mean of its divisors is an integer number (3310371).

Almost surely, 2^6620741 is an apocalyptic number.

It is an amenable number.

6620741 is a deficient number, since it is larger than the sum of its proper divisors (1).

6620741 is an equidigital number, since it uses as much as digits as its factorization.

6620741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 6620741 is about 2573.0800609386. The cubic root of 6620741 is about 187.7740324898.

The spelling of 6620741 in words is "six million, six hundred twenty thousand, seven hundred forty-one".