620427611 has 2 divisors, whose sum is σ = 620427612. Its totient is φ = 620427610.

The previous prime is 620427569. The next prime is 620427629. The reversal of 620427611 is 116724026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620427611 - 2²⁶ = 553318747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (620427641) 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, 310213805 + 310213806.

It is an arithmetic number, because the mean of its divisors is an integer number (310213806).

Almost surely, 2^620427611 is an apocalyptic number.

620427611 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427611 is an equidigital number, since it uses as much as digits as its factorization.

620427611 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 29.

The square root of 620427611 is about 24908.3843514588. The cubic root of 620427611 is about 852.8978880684.

The spelling of 620427611 in words is "six hundred twenty million, four hundred twenty-seven thousand, six hundred eleven".