628213 has 2 divisors, whose sum is σ = 628214. Its totient is φ = 628212.

The previous prime is 628207. The next prime is 628217. The reversal of 628213 is 312826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521284 + 106929 = 722^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 628213 - 2¹⁷ = 497141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314106 + 314107.

It is an arithmetic number, because the mean of its divisors is an integer number (314107).

2⁶²⁸²¹³ is an apocalyptic number.

It is an amenable number.

628213 is a deficient number, since it is larger than the sum of its proper divisors (1).

628213 is an equidigital number, since it uses as much as digits as its factorization.

628213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 628213 is about 792.5988897292. The cubic root of 628213 is about 85.6450577267.

It can be divided in two parts, 628 and 213, that added together give a square (841 = 29²).

The spelling of 628213 in words is "six hundred twenty-eight thousand, two hundred thirteen".