620948311 has 2 divisors, whose sum is σ = 620948312. Its totient is φ = 620948310.

The previous prime is 620948281. The next prime is 620948323. The reversal of 620948311 is 113849026.

620948311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620948311 - 2⁹ = 620947799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620948711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310474155 + 310474156.

It is an arithmetic number, because the mean of its divisors is an integer number (310474156).

Almost surely, 2^620948311 is an apocalyptic number.

620948311 is a deficient number, since it is larger than the sum of its proper divisors (1).

620948311 is an equidigital number, since it uses as much as digits as its factorization.

620948311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 620948311 is about 24918.8344631124. The cubic root of 620948311 is about 853.1364223421.

The spelling of 620948311 in words is "six hundred twenty million, nine hundred forty-eight thousand, three hundred eleven".