6628541 has 2 divisors, whose sum is σ = 6628542. Its totient is φ = 6628540.

The previous prime is 6628537. The next prime is 6628553. The reversal of 6628541 is 1458266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 105625 = 2554^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 6628541 - 2² = 6628537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6628498 and 6628507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314270 + 3314271.

It is an arithmetic number, because the mean of its divisors is an integer number (3314271).

Almost surely, 2^6628541 is an apocalyptic number.

It is an amenable number.

6628541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628541 is an equidigital number, since it uses as much as digits as its factorization.

6628541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 6628541 is about 2574.5953080047. The cubic root of 6628541 is about 187.8477434062.

The spelling of 6628541 in words is "six million, six hundred twenty-eight thousand, five hundred forty-one".