666343436 has 12 divisors (see below), whose sum is σ = 1272110280. Its totient is φ = 302883360.

The previous prime is 666343429. The next prime is 666343451. The reversal of 666343436 is 634343666.

It is a happy number.

666343436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 666343393 and 666343402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7572041 + ... + 7572128.

It is an arithmetic number, because the mean of its divisors is an integer number (106009190).

Almost surely, 2^666343436 is an apocalyptic number.

It is an amenable number.

666343436 is a deficient number, since it is larger than the sum of its proper divisors (605766844).

666343436 is a wasteful number, since it uses less digits than its factorization.

666343436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15144184 (or 15144182 counting only the distinct ones).

The product of its digits is 559872, while the sum is 41.

The square root of 666343436 is about 25813.6288808838. The cubic root of 666343436 is about 873.4392579147.

The spelling of 666343436 in words is "six hundred sixty-six million, three hundred forty-three thousand, four hundred thirty-six".