611116061 has 2 divisors, whose sum is σ = 611116062. Its totient is φ = 611116060.

The previous prime is 611116039. The next prime is 611116073. The reversal of 611116061 is 160611116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599515225 + 11600836 = 24485^2 + 3406^2 .

It is a cyclic number.

It is not a de Polignac number, because 611116061 - 2⁶ = 611115997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611116001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305558030 + 305558031.

It is an arithmetic number, because the mean of its divisors is an integer number (305558031).

Almost surely, 2^611116061 is an apocalyptic number.

It is an amenable number.

611116061 is a deficient number, since it is larger than the sum of its proper divisors (1).

611116061 is an equidigital number, since it uses as much as digits as its factorization.

611116061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 611116061 is about 24720.7617398817. The cubic root of 611116061 is about 848.6095194585.

Adding to 611116061 its reverse (160611116), we get a palindrome (771727177).

The spelling of 611116061 in words is "six hundred eleven million, one hundred sixteen thousand, sixty-one".