655111233 has 72 divisors (see below), whose sum is σ = 1173174912. Its totient is φ = 363986784.

The previous prime is 655111229. The next prime is 655111253. The reversal of 655111233 is 332111556.

655111233 is a `hidden beast` number, since 655 + 1 + 1 + 1 + 2 + 3 + 3 = 666.

It is not a de Polignac number, because 655111233 - 2² = 655111229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 655111197 and 655111206.

It is not an unprimeable number, because it can be changed into a prime (655111253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 439816 + ... + 441302.

It is an arithmetic number, because the mean of its divisors is an integer number (16294096).

Almost surely, 2^655111233 is an apocalyptic number.

655111233 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

655111233 is a deficient number, since it is larger than the sum of its proper divisors (518063679).

655111233 is a wasteful number, since it uses less digits than its factorization.

655111233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1534 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 655111233 is about 25595.1408083644. The cubic root of 655111233 is about 868.5037182047.

Adding to 655111233 its reverse (332111556), we get a palindrome (987222789).

The spelling of 655111233 in words is "six hundred fifty-five million, one hundred eleven thousand, two hundred thirty-three".