620427377 has 2 divisors, whose sum is σ = 620427378. Its totient is φ = 620427376.

The previous prime is 620427347. The next prime is 620427383. The reversal of 620427377 is 773724026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514563856 + 105863521 = 22684^2 + 10289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620427377 is a prime.

It is a super-2 number, since 2×620427377² = 769860260262200258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620427377.

It is not a weakly prime, because it can be changed into another prime (620427317) 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, 310213688 + 310213689.

It is an arithmetic number, because the mean of its divisors is an integer number (310213689).

Almost surely, 2^620427377 is an apocalyptic number.

It is an amenable number.

620427377 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427377 is an equidigital number, since it uses as much as digits as its factorization.

620427377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 38.

The square root of 620427377 is about 24908.3796542449. The cubic root of 620427377 is about 852.8977808423.

The spelling of 620427377 in words is "six hundred twenty million, four hundred twenty-seven thousand, three hundred seventy-seven".