612611 has 2 divisors, whose sum is σ = 612612. Its totient is φ = 612610.

The previous prime is 612589. The next prime is 612613. The reversal of 612611 is 116216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612611 - 2¹⁰ = 611587 is a prime.

It is a Sophie Germain prime.

Together with 612613, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612611.

It is not a weakly prime, because it can be changed into another prime (612613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306305 + 306306.

It is an arithmetic number, because the mean of its divisors is an integer number (306306).

2⁶¹²⁶¹¹ is an apocalyptic number.

612611 is a deficient number, since it is larger than the sum of its proper divisors (1).

612611 is an equidigital number, since it uses as much as digits as its factorization.

612611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 612611 is about 782.6947042110. The cubic root of 612611 is about 84.9300924632.

Adding to 612611 its reverse (116216), we get a palindrome (728827).

The spelling of 612611 in words is "six hundred twelve thousand, six hundred eleven".