628822223 has 2 divisors, whose sum is σ = 628822224. Its totient is φ = 628822222.

The previous prime is 628822189. The next prime is 628822241. The reversal of 628822223 is 322228826.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628822223 - 2¹⁰ = 628821199 is a prime.

It is equal to p_32749226 and since 628822223 and 32749226 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628822253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314411111 + 314411112.

It is an arithmetic number, because the mean of its divisors is an integer number (314411112).

Almost surely, 2^628822223 is an apocalyptic number.

628822223 is a deficient number, since it is larger than the sum of its proper divisors (1).

628822223 is an equidigital number, since it uses as much as digits as its factorization.

628822223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The square root of 628822223 is about 25076.3279409087. The cubic root of 628822223 is about 856.7273415787.

The spelling of 628822223 in words is "six hundred twenty-eight million, eight hundred twenty-two thousand, two hundred twenty-three".