620352739 has 2 divisors, whose sum is σ = 620352740. Its totient is φ = 620352738.

The previous prime is 620352731. The next prime is 620352743. The reversal of 620352739 is 937253026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620352739 - 2³ = 620352731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620352698 and 620352707.

It is not a weakly prime, because it can be changed into another prime (620352731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310176369 + 310176370.

It is an arithmetic number, because the mean of its divisors is an integer number (310176370).

Almost surely, 2^620352739 is an apocalyptic number.

620352739 is a deficient number, since it is larger than the sum of its proper divisors (1).

620352739 is an equidigital number, since it uses as much as digits as its factorization.

620352739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 620352739 is about 24906.8813583716. The cubic root of 620352739 is about 852.8635780010.

The spelling of 620352739 in words is "six hundred twenty million, three hundred fifty-two thousand, seven hundred thirty-nine".