612811 has 2 divisors, whose sum is σ = 612812. Its totient is φ = 612810.

The previous prime is 612809. The next prime is 612817. The reversal of 612811 is 118216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612811 - 2¹ = 612809 is a prime.

Together with 612809, it forms a pair of twin primes.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (612817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306405 + 306406.

It is an arithmetic number, because the mean of its divisors is an integer number (306406).

2⁶¹²⁸¹¹ is an apocalyptic number.

612811 is a deficient number, since it is larger than the sum of its proper divisors (1).

612811 is an equidigital number, since it uses as much as digits as its factorization.

612811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 19.

The square root of 612811 is about 782.8224575215. The cubic root of 612811 is about 84.9393338744.

The spelling of 612811 in words is "six hundred twelve thousand, eight hundred eleven".