620345738267 has 2 divisors, whose sum is σ = 620345738268. Its totient is φ = 620345738266.

The previous prime is 620345738227. The next prime is 620345738269. The reversal of 620345738267 is 762837543026.

It is a happy number.

620345738267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620345738267 - 2⁸ = 620345738011 is a prime.

Together with 620345738269, 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 (620345738269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310172869133 + 310172869134.

It is an arithmetic number, because the mean of its divisors is an integer number (310172869134).

Almost surely, 2^620345738267 is an apocalyptic number.

620345738267 is a deficient number, since it is larger than the sum of its proper divisors (1).

620345738267 is an equidigital number, since it uses as much as digits as its factorization.

620345738267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 620345738267 in words is "six hundred twenty billion, three hundred forty-five million, seven hundred thirty-eight thousand, two hundred sixty-seven".