620607161 has 2 divisors, whose sum is σ = 620607162. Its totient is φ = 620607160.

The previous prime is 620607103. The next prime is 620607167. The reversal of 620607161 is 161706026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573889936 + 46717225 = 23956^2 + 6835^2 .

It is a cyclic number.

It is not a de Polignac number, because 620607161 - 2¹⁰ = 620606137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (620607167) 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, 310303580 + 310303581.

It is an arithmetic number, because the mean of its divisors is an integer number (310303581).

Almost surely, 2^620607161 is an apocalyptic number.

It is an amenable number.

620607161 is a deficient number, since it is larger than the sum of its proper divisors (1).

620607161 is an equidigital number, since it uses as much as digits as its factorization.

620607161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 620607161 is about 24911.9882988091. The cubic root of 620607161 is about 852.9801555470.

The spelling of 620607161 in words is "six hundred twenty million, six hundred seven thousand, one hundred sixty-one".