620216929 has 2 divisors, whose sum is σ = 620216930. Its totient is φ = 620216928.

The previous prime is 620216897. The next prime is 620217023. The reversal of 620216929 is 929612026.

620216929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611078400 + 9138529 = 24720^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 620216929 - 2⁵ = 620216897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620216329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310108464 + 310108465.

It is an arithmetic number, because the mean of its divisors is an integer number (310108465).

Almost surely, 2^620216929 is an apocalyptic number.

It is an amenable number.

620216929 is a deficient number, since it is larger than the sum of its proper divisors (1).

620216929 is an equidigital number, since it uses as much as digits as its factorization.

620216929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 620216929 is about 24904.1548541604. The cubic root of 620216929 is about 852.8013360706.

The spelling of 620216929 in words is "six hundred twenty million, two hundred sixteen thousand, nine hundred twenty-nine".