620316091 has 2 divisors, whose sum is σ = 620316092. Its totient is φ = 620316090.

The previous prime is 620316079. The next prime is 620316097. The reversal of 620316091 is 190613026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620316091 - 2¹³ = 620307899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620316097) 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, 310158045 + 310158046.

It is an arithmetic number, because the mean of its divisors is an integer number (310158046).

Almost surely, 2^620316091 is an apocalyptic number.

620316091 is a deficient number, since it is larger than the sum of its proper divisors (1).

620316091 is an equidigital number, since it uses as much as digits as its factorization.

620316091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 620316091 is about 24906.1456472092. The cubic root of 620316091 is about 852.8467830616.

The spelling of 620316091 in words is "six hundred twenty million, three hundred sixteen thousand, ninety-one".