611081 has 2 divisors, whose sum is σ = 611082. Its totient is φ = 611080.

The previous prime is 611071. The next prime is 611101. The reversal of 611081 is 180116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 99856 = 715^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 611081 - 2¹⁴ = 594697 is a prime.

It is a super-3 number, since 3×611081³ = 684569580089533323, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (611011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305540 + 305541.

It is an arithmetic number, because the mean of its divisors is an integer number (305541).

2⁶¹¹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

611081 is a deficient number, since it is larger than the sum of its proper divisors (1).

611081 is an equidigital number, since it uses as much as digits as its factorization.

611081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 611081 is about 781.7167006020. The cubic root of 611081 is about 84.8593290317.

Adding to 611081 its reverse (180116), we get a palindrome (791197).

The spelling of 611081 in words is "six hundred eleven thousand, eighty-one".