611144873 has 6 divisors (see below), whose sum is σ = 628110126. Its totient is φ = 594626112.

The previous prime is 611144827. The next prime is 611144887. The reversal of 611144873 is 378441116.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 303212569 + 307932304 = 17413^2 + 17548^2 .

It is not a de Polignac number, because 611144873 - 2²⁰ = 610096297 is a prime.

It is a super-2 number, since 2×611144873² = 746996111588372258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611144813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221840 + ... + 224577.

It is an arithmetic number, because the mean of its divisors is an integer number (104685021).

Almost surely, 2^611144873 is an apocalyptic number.

It is an amenable number.

611144873 is a deficient number, since it is larger than the sum of its proper divisors (16965253).

611144873 is an equidigital number, since it uses as much as digits as its factorization.

611144873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446491 (or 446454 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 611144873 is about 24721.3444820463. The cubic root of 611144873 is about 848.6228555795.

Adding to 611144873 its reverse (378441116), we get a palindrome (989585989).

The spelling of 611144873 in words is "six hundred eleven million, one hundred forty-four thousand, eight hundred seventy-three".