620163617 has 2 divisors, whose sum is σ = 620163618. Its totient is φ = 620163616.

The previous prime is 620163611. The next prime is 620163641. The reversal of 620163617 is 716361026.

620163617 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., 430936081 + 189227536 = 20759^2 + 13756^2 .

It is a cyclic number.

It is not a de Polignac number, because 620163617 - 2⁸ = 620163361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620163611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310081808 + 310081809.

It is an arithmetic number, because the mean of its divisors is an integer number (310081809).

Almost surely, 2^620163617 is an apocalyptic number.

It is an amenable number.

620163617 is a deficient number, since it is larger than the sum of its proper divisors (1).

620163617 is an equidigital number, since it uses as much as digits as its factorization.

620163617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 620163617 is about 24903.0844876694. The cubic root of 620163617 is about 852.7769006161.

The spelling of 620163617 in words is "six hundred twenty million, one hundred sixty-three thousand, six hundred seventeen".