623220229 has 2 divisors, whose sum is σ = 623220230. Its totient is φ = 623220228.

The previous prime is 623220211. The next prime is 623220233. The reversal of 623220229 is 922022326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380328004 + 242892225 = 19502^2 + 15585^2 .

It is a cyclic number.

It is not a de Polignac number, because 623220229 - 2⁹ = 623219717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623220197 and 623220206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623220529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311610114 + 311610115.

It is an arithmetic number, because the mean of its divisors is an integer number (311610115).

Almost surely, 2^623220229 is an apocalyptic number.

It is an amenable number.

623220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

623220229 is an equidigital number, since it uses as much as digits as its factorization.

623220229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 623220229 is about 24964.3792031767. The cubic root of 623220229 is about 854.1756376114.

The spelling of 623220229 in words is "six hundred twenty-three million, two hundred twenty thousand, two hundred twenty-nine".