620968805887 has 2 divisors, whose sum is σ = 620968805888. Its totient is φ = 620968805886.

The previous prime is 620968805879. The next prime is 620968805959. The reversal of 620968805887 is 788508869026.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620968805887 - 2³ = 620968805879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620968805867) 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, 310484402943 + 310484402944.

It is an arithmetic number, because the mean of its divisors is an integer number (310484402944).

Almost surely, 2^620968805887 is an apocalyptic number.

620968805887 is a deficient number, since it is larger than the sum of its proper divisors (1).

620968805887 is an equidigital number, since it uses as much as digits as its factorization.

620968805887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92897280, while the sum is 67.

The spelling of 620968805887 in words is "six hundred twenty billion, nine hundred sixty-eight million, eight hundred five thousand, eight hundred eighty-seven".