620650057 has 2 divisors, whose sum is σ = 620650058. Its totient is φ = 620650056.

The previous prime is 620650027. The next prime is 620650073. The reversal of 620650057 is 750056026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462293001 + 158357056 = 21501^2 + 12584^2 .

It is a cyclic number.

It is not a de Polignac number, because 620650057 - 2²⁷ = 486432329 is a prime.

It is not a weakly prime, because it can be changed into another prime (620650027) 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, 310325028 + 310325029.

It is an arithmetic number, because the mean of its divisors is an integer number (310325029).

Almost surely, 2^620650057 is an apocalyptic number.

It is an amenable number.

620650057 is a deficient number, since it is larger than the sum of its proper divisors (1).

620650057 is an equidigital number, since it uses as much as digits as its factorization.

620650057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 620650057 is about 24912.8492348828. The cubic root of 620650057 is about 852.9998075889. Note that the first 3 decimals are identical.

The spelling of 620650057 in words is "six hundred twenty million, six hundred fifty thousand, fifty-seven".