620306233 has 2 divisors, whose sum is σ = 620306234. Its totient is φ = 620306232.

The previous prime is 620306231. The next prime is 620306279. The reversal of 620306233 is 332603026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 573698304 + 46607929 = 23952^2 + 6827^2 .

It is a cyclic number.

It is not a de Polignac number, because 620306233 - 2¹ = 620306231 is a prime.

Together with 620306231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 620306198 and 620306207.

It is not a weakly prime, because it can be changed into another prime (620306231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310153116 + 310153117.

It is an arithmetic number, because the mean of its divisors is an integer number (310153117).

Almost surely, 2^620306233 is an apocalyptic number.

It is an amenable number.

620306233 is a deficient number, since it is larger than the sum of its proper divisors (1).

620306233 is an equidigital number, since it uses as much as digits as its factorization.

620306233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 620306233 is about 24905.9477434608. The cubic root of 620306233 is about 852.8422652530.

Adding to 620306233 its reverse (332603026), we get a palindrome (952909259).

The spelling of 620306233 in words is "six hundred twenty million, three hundred six thousand, two hundred thirty-three".