611116801 has 2 divisors, whose sum is σ = 611116802. Its totient is φ = 611116800.

The previous prime is 611116763. The next prime is 611116837. The reversal of 611116801 is 108611116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455865201 + 155251600 = 21351^2 + 12460^2 .

It is a cyclic number.

It is not a de Polignac number, because 611116801 - 2⁷ = 611116673 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305558400 + 305558401.

It is an arithmetic number, because the mean of its divisors is an integer number (305558401).

Almost surely, 2^611116801 is an apocalyptic number.

It is an amenable number.

611116801 is a deficient number, since it is larger than the sum of its proper divisors (1).

611116801 is an equidigital number, since it uses as much as digits as its factorization.

611116801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 611116801 is about 24720.7767070535. The cubic root of 611116801 is about 848.6098619852.

Adding to 611116801 its reverse (108611116), we get a palindrome (719727917).

The spelling of 611116801 in words is "six hundred eleven million, one hundred sixteen thousand, eight hundred one".