628841 has 2 divisors, whose sum is σ = 628842. Its totient is φ = 628840.

The previous prime is 628819. The next prime is 628861. The reversal of 628841 is 148826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495616 + 133225 = 704^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 628841 - 2¹⁸ = 366697 is a prime.

It is not a weakly prime, because it can be changed into another prime (628801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314420 + 314421.

It is an arithmetic number, because the mean of its divisors is an integer number (314421).

2⁶²⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

628841 is a deficient number, since it is larger than the sum of its proper divisors (1).

628841 is an equidigital number, since it uses as much as digits as its factorization.

628841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 628841 is about 792.9949558478. The cubic root of 628841 is about 85.6735868954.

The spelling of 628841 in words is "six hundred twenty-eight thousand, eight hundred forty-one".