620658010348021 has 2 divisors, whose sum is σ = 620658010348022. Its totient is φ = 620658010348020.

The previous prime is 620658010348003. The next prime is 620658010348039. The reversal of 620658010348021 is 120843010856026.

It is a balanced prime because it is at equal distance from previous prime (620658010348003) and next prime (620658010348039).

It can be written as a sum of positive squares in only one way, i.e., 620347191832900 + 310818515121 = 24906770^2 + 557511^2 .

It is a cyclic number.

It is not a de Polignac number, because 620658010348021 - 2⁵ = 620658010347989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620658010748021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310329005174010 + 310329005174011.

It is an arithmetic number, because the mean of its divisors is an integer number (310329005174011).

Almost surely, 2^{620658010348021} is an apocalyptic number.

It is an amenable number.

620658010348021 is a deficient number, since it is larger than the sum of its proper divisors (1).

620658010348021 is an equidigital number, since it uses as much as digits as its factorization.

620658010348021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 620658010348021 in words is "six hundred twenty trillion, six hundred fifty-eight billion, ten million, three hundred forty-eight thousand, twenty-one".