621359 has 2 divisors, whose sum is σ = 621360. Its totient is φ = 621358.

The previous prime is 621353. The next prime is 621371. The reversal of 621359 is 953126.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 621359 - 2⁴ = 621343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621353) 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, 310679 + 310680.

It is an arithmetic number, because the mean of its divisors is an integer number (310680).

2⁶²¹³⁵⁹ is an apocalyptic number.

621359 is a deficient number, since it is larger than the sum of its proper divisors (1).

621359 is an equidigital number, since it uses as much as digits as its factorization.

621359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 621359 is about 788.2632808903. The cubic root of 621359 is about 85.3324466189.

The spelling of 621359 in words is "six hundred twenty-one thousand, three hundred fifty-nine".