620427061 has 2 divisors, whose sum is σ = 620427062. Its totient is φ = 620427060.

The previous prime is 620427043. The next prime is 620427077. The reversal of 620427061 is 160724026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364619025 + 255808036 = 19095^2 + 15994^2 .

It is a cyclic number.

It is not a de Polignac number, because 620427061 - 2⁵ = 620427029 is a prime.

It is equal to p_32334454 and since 620427061 and 32334454 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620427161) 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, 310213530 + 310213531.

It is an arithmetic number, because the mean of its divisors is an integer number (310213531).

Almost surely, 2^620427061 is an apocalyptic number.

It is an amenable number.

620427061 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427061 is an equidigital number, since it uses as much as digits as its factorization.

620427061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 620427061 is about 24908.3733109972. The cubic root of 620427061 is about 852.8976360412.

The spelling of 620427061 in words is "six hundred twenty million, four hundred twenty-seven thousand, sixty-one".