620650211 has 2 divisors, whose sum is σ = 620650212. Its totient is φ = 620650210.

The previous prime is 620650189. The next prime is 620650223. The reversal of 620650211 is 112056026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620650211 - 2²² = 616455907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620650231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310325105 + 310325106.

It is an arithmetic number, because the mean of its divisors is an integer number (310325106).

Almost surely, 2^620650211 is an apocalyptic number.

620650211 is a deficient number, since it is larger than the sum of its proper divisors (1).

620650211 is an equidigital number, since it uses as much as digits as its factorization.

620650211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 620650211 is about 24912.8523256571. The cubic root of 620650211 is about 852.9998781397. Note that the first 3 decimals are identical.

The spelling of 620650211 in words is "six hundred twenty million, six hundred fifty thousand, two hundred eleven".