611671 has 2 divisors, whose sum is σ = 611672. Its totient is φ = 611670.

The previous prime is 611657. The next prime is 611693. The reversal of 611671 is 176116.

It is an a-pointer prime, because the next prime (611693) can be obtained adding 611671 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611671 - 2⁷ = 611543 is a prime.

611671 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611621) 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, 305835 + 305836.

It is an arithmetic number, because the mean of its divisors is an integer number (305836).

2⁶¹¹⁶⁷¹ is an apocalyptic number.

611671 is a deficient number, since it is larger than the sum of its proper divisors (1).

611671 is an equidigital number, since it uses as much as digits as its factorization.

611671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 611671 is about 782.0939841221. The cubic root of 611671 is about 84.8866308676.

Adding to 611671 its reverse (176116), we get a palindrome (787787).

The spelling of 611671 in words is "six hundred eleven thousand, six hundred seventy-one".