6620441 has 2 divisors, whose sum is σ = 6620442. Its totient is φ = 6620440.

The previous prime is 6620423. The next prime is 6620461. The reversal of 6620441 is 1440266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 92416 = 2555^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 6620441 - 2¹⁴ = 6604057 is a prime.

It is not a weakly prime, because it can be changed into another prime (6620401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310220 + 3310221.

It is an arithmetic number, because the mean of its divisors is an integer number (3310221).

Almost surely, 2^6620441 is an apocalyptic number.

It is an amenable number.

6620441 is a deficient number, since it is larger than the sum of its proper divisors (1).

6620441 is an equidigital number, since it uses as much as digits as its factorization.

6620441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6620441 is about 2573.0217643852. The cubic root of 6620441 is about 187.7711962987.

The spelling of 6620441 in words is "six million, six hundred twenty thousand, four hundred forty-one".