608685811 has 2 divisors, whose sum is σ = 608685812. Its totient is φ = 608685810.

The previous prime is 608685809. The next prime is 608685817. The reversal of 608685811 is 118586806.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 608685811 - 2¹ = 608685809 is a prime.

Together with 608685809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (608685817) 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, 304342905 + 304342906.

It is an arithmetic number, because the mean of its divisors is an integer number (304342906).

Almost surely, 2^608685811 is an apocalyptic number.

608685811 is a deficient number, since it is larger than the sum of its proper divisors (1).

608685811 is an equidigital number, since it uses as much as digits as its factorization.

608685811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 608685811 is about 24671.5587468648. The cubic root of 608685811 is about 847.4831250574.

The spelling of 608685811 in words is "six hundred eight million, six hundred eighty-five thousand, eight hundred eleven".