666533332 has 12 divisors (see below), whose sum is σ = 1206655380. Its totient is φ = 321774656.

The previous prime is 666533327. The next prime is 666533333. The reversal of 666533332 is 233335666.

It can be written as a sum of positive squares in 2 ways, for example, as 369177796 + 297355536 = 19214^2 + 17244^2 .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 666533291 and 666533300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666533333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872873 + ... + 2873104.

It is an arithmetic number, because the mean of its divisors is an integer number (100554615).

Almost surely, 2^666533332 is an apocalyptic number.

It is an amenable number.

666533332 is a deficient number, since it is larger than the sum of its proper divisors (540122048).

666533332 is a wasteful number, since it uses less digits than its factorization.

666533332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746010 (or 5746008 counting only the distinct ones).

The product of its digits is 174960, while the sum is 37.

The square root of 666533332 is about 25817.3068308838. The cubic root of 666533332 is about 873.5222215732.

Adding to 666533332 its reverse (233335666), we get a palindrome (899868998).

The spelling of 666533332 in words is "six hundred sixty-six million, five hundred thirty-three thousand, three hundred thirty-two".