620427077 has 2 divisors, whose sum is σ = 620427078. Its totient is φ = 620427076.

The previous prime is 620427061. The next prime is 620427089. The reversal of 620427077 is 770724026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459416356 + 161010721 = 21434^2 + 12689^2 .

It is a cyclic number.

It is not a de Polignac number, because 620427077 - 2⁴ = 620427061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620427377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310213538 + 310213539.

It is an arithmetic number, because the mean of its divisors is an integer number (310213539).

Almost surely, 2^620427077 is an apocalyptic number.

It is an amenable number.

620427077 is a deficient number, since it is larger than the sum of its proper divisors (1).

620427077 is an equidigital number, since it uses as much as digits as its factorization.

620427077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 620427077 is about 24908.3736321744. The cubic root of 620427077 is about 852.8976433729.

The spelling of 620427077 in words is "six hundred twenty million, four hundred twenty-seven thousand, seventy-seven".