620003738881 has 2 divisors, whose sum is σ = 620003738882. Its totient is φ = 620003738880.

The previous prime is 620003738821. The next prime is 620003738903. The reversal of 620003738881 is 188837300026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561613849281 + 58389889600 = 749409^2 + 241640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620003738881 is a prime.

It is a super-2 number, since 2×620003738881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (620003738821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310001869440 + 310001869441.

It is an arithmetic number, because the mean of its divisors is an integer number (310001869441).

Almost surely, 2^620003738881 is an apocalyptic number.

It is an amenable number.

620003738881 is a deficient number, since it is larger than the sum of its proper divisors (1).

620003738881 is an equidigital number, since it uses as much as digits as its factorization.

620003738881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 620003738881 in words is "six hundred twenty billion, three million, seven hundred thirty-eight thousand, eight hundred eighty-one".