666425326 has 8 divisors (see below), whose sum is σ = 1142443440. Its totient is φ = 285610848.

The previous prime is 666425317. The next prime is 666425341. The reversal of 666425326 is 623524666.

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

It is a congruent number.

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, 23800891 + ... + 23800918.

It is an arithmetic number, because the mean of its divisors is an integer number (142805430).

Almost surely, 2^666425326 is an apocalyptic number.

666425326 is a deficient number, since it is larger than the sum of its proper divisors (476018114).

666425326 is a wasteful number, since it uses less digits than its factorization.

666425326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47601818.

The product of its digits is 311040, while the sum is 40.

The square root of 666425326 is about 25815.2150097573. The cubic root of 666425326 is about 873.4750367674.

The spelling of 666425326 in words is "six hundred sixty-six million, four hundred twenty-five thousand, three hundred twenty-six".