620007888881 has 2 divisors, whose sum is σ = 620007888882. Its totient is φ = 620007888880.

The previous prime is 620007888847. The next prime is 620007888883. The reversal of 620007888881 is 188888700026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542345346481 + 77662542400 = 736441^2 + 278680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620007888881 is a prime.

It is a super-2 number, since 2×620007888881² (a number of 24 digits) contains 22 as substring.

Together with 620007888883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620007888883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310003944440 + 310003944441.

It is an arithmetic number, because the mean of its divisors is an integer number (310003944441).

Almost surely, 2^620007888881 is an apocalyptic number.

It is an amenable number.

620007888881 is a deficient number, since it is larger than the sum of its proper divisors (1).

620007888881 is an equidigital number, since it uses as much as digits as its factorization.

620007888881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2752512, while the sum is 56.

The spelling of 620007888881 in words is "six hundred twenty billion, seven million, eight hundred eighty-eight thousand, eight hundred eighty-one".