628219 has 2 divisors, whose sum is σ = 628220. Its totient is φ = 628218.

The previous prime is 628217. The next prime is 628231. The reversal of 628219 is 912826.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628219 - 2¹ = 628217 is a prime.

It is a super-2 number, since 2×628219² = 789318223922, which contains 22 as substring.

Together with 628217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (628213) 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, 314109 + 314110.

It is an arithmetic number, because the mean of its divisors is an integer number (314110).

2⁶²⁸²¹⁹ is an apocalyptic number.

628219 is a deficient number, since it is larger than the sum of its proper divisors (1).

628219 is an equidigital number, since it uses as much as digits as its factorization.

628219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 628219 is about 792.6026747368. The cubic root of 628219 is about 85.6453303883.

It can be divided in two parts, 62 and 8219, that added together give a square (8281 = 91²).

The spelling of 628219 in words is "six hundred twenty-eight thousand, two hundred nineteen".