666334238 has 8 divisors (see below), whose sum is σ = 999649560. Its totient is φ = 333117720.

The previous prime is 666334231. The next prime is 666334283. The reversal of 666334238 is 832433666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 666334195 and 666334204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666334231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4553 + ... + 36788.

It is an arithmetic number, because the mean of its divisors is an integer number (124956195).

Almost surely, 2^666334238 is an apocalyptic number.

666334238 is a deficient number, since it is larger than the sum of its proper divisors (333315322).

666334238 is a wasteful number, since it uses less digits than its factorization.

666334238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49402.

The product of its digits is 373248, while the sum is 41.

The square root of 666334238 is about 25813.4507185692. The cubic root of 666334238 is about 873.4352390005.

The spelling of 666334238 in words is "six hundred sixty-six million, three hundred thirty-four thousand, two hundred thirty-eight".