621883 has 2 divisors, whose sum is σ = 621884. Its totient is φ = 621882.

The previous prime is 621871. The next prime is 621893. The reversal of 621883 is 388126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621883 - 2⁹ = 621371 is a prime.

It is not a weakly prime, because it can be changed into another prime (621833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310941 + 310942.

It is an arithmetic number, because the mean of its divisors is an integer number (310942).

2⁶²¹⁸⁸³ is an apocalyptic number.

621883 is a deficient number, since it is larger than the sum of its proper divisors (1).

621883 is an equidigital number, since it uses as much as digits as its factorization.

621883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 621883 is about 788.5955871041. The cubic root of 621883 is about 85.3564271941.

The spelling of 621883 in words is "six hundred twenty-one thousand, eight hundred eighty-three".