666674438 has 8 divisors (see below), whose sum is σ = 1006381632. Its totient is φ = 331213896.

The previous prime is 666674423. The next prime is 666674447. The reversal of 666674438 is 834476666.

666674438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1061270 + ... + 1061897.

It is an arithmetic number, because the mean of its divisors is an integer number (125797704).

Almost surely, 2^666674438 is an apocalyptic number.

666674438 is a deficient number, since it is larger than the sum of its proper divisors (339707194).

666674438 is a wasteful number, since it uses less digits than its factorization.

666674438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123326.

The product of its digits is 3483648, while the sum is 50.

The square root of 666674438 is about 25820.0394655004. The cubic root of 666674438 is about 873.5838591656.

The spelling of 666674438 in words is "six hundred sixty-six million, six hundred seventy-four thousand, four hundred thirty-eight".