611326801 has 2 divisors, whose sum is σ = 611326802. Its totient is φ = 611326800.

The previous prime is 611326799. The next prime is 611326831. The reversal of 611326801 is 108623116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611276176 + 50625 = 24724^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 611326801 - 2¹ = 611326799 is a prime.

Together with 611326799, 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 611326801.

It is not a weakly prime, because it can be changed into another prime (611326831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305663400 + 305663401.

It is an arithmetic number, because the mean of its divisors is an integer number (305663401).

Almost surely, 2^611326801 is an apocalyptic number.

It is an amenable number.

611326801 is a deficient number, since it is larger than the sum of its proper divisors (1).

611326801 is an equidigital number, since it uses as much as digits as its factorization.

611326801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 611326801 is about 24725.0237815861. The cubic root of 611326801 is about 848.7070543506.

Adding to 611326801 its reverse (108623116), we get a palindrome (719949917).

The spelling of 611326801 in words is "six hundred eleven million, three hundred twenty-six thousand, eight hundred one".