620344877 has 2 divisors, whose sum is σ = 620344878. Its totient is φ = 620344876.

The previous prime is 620344859. The next prime is 620344897. The reversal of 620344877 is 778443026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407797636 + 212547241 = 20194^2 + 14579^2 .

It is a cyclic number.

It is not a de Polignac number, because 620344877 - 2²² = 616150573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620344847) 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, 310172438 + 310172439.

It is an arithmetic number, because the mean of its divisors is an integer number (310172439).

Almost surely, 2^620344877 is an apocalyptic number.

It is an amenable number.

620344877 is a deficient number, since it is larger than the sum of its proper divisors (1).

620344877 is an equidigital number, since it uses as much as digits as its factorization.

620344877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 620344877 is about 24906.7235300029. The cubic root of 620344877 is about 852.8599750821.

The spelling of 620344877 in words is "six hundred twenty million, three hundred forty-four thousand, eight hundred seventy-seven".