620066677 has 2 divisors, whose sum is σ = 620066678. Its totient is φ = 620066676.

The previous prime is 620066651. The next prime is 620066693. The reversal of 620066677 is 776660026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475850596 + 144216081 = 21814^2 + 12009^2 .

It is a cyclic number.

It is not a de Polignac number, because 620066677 - 2¹⁹ = 619542389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620067677) 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, 310033338 + 310033339.

It is an arithmetic number, because the mean of its divisors is an integer number (310033339).

Almost surely, 2^620066677 is an apocalyptic number.

It is an amenable number.

620066677 is a deficient number, since it is larger than the sum of its proper divisors (1).

620066677 is an equidigital number, since it uses as much as digits as its factorization.

620066677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 620066677 is about 24901.1380663615. The cubic root of 620066677 is about 852.7324647617.

The spelling of 620066677 in words is "six hundred twenty million, sixty-six thousand, six hundred seventy-seven".