620152756397 has 2 divisors, whose sum is σ = 620152756398. Its totient is φ = 620152756396.

The previous prime is 620152756343. The next prime is 620152756439. The reversal of 620152756397 is 793657251026.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604333657321 + 15819099076 = 777389^2 + 125774^2 .

It is a cyclic number.

It is not a de Polignac number, because 620152756397 - 2⁸ = 620152756141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620152756897) 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, 310076378198 + 310076378199.

It is an arithmetic number, because the mean of its divisors is an integer number (310076378199).

Almost surely, 2^620152756397 is an apocalyptic number.

It is an amenable number.

620152756397 is a deficient number, since it is larger than the sum of its proper divisors (1).

620152756397 is an equidigital number, since it uses as much as digits as its factorization.

620152756397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 620152756397 in words is "six hundred twenty billion, one hundred fifty-two million, seven hundred fifty-six thousand, three hundred ninety-seven".