638846327 has 8 divisors (see below), whose sum is σ = 733328256. Its totient is φ = 545168952.

The previous prime is 638846293. The next prime is 638846347. The reversal of 638846327 is 723648836.

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

It is a cyclic number.

It is not a de Polignac number, because 638846327 - 2⁸ = 638846071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638846347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199433 + ... + 202610.

It is an arithmetic number, because the mean of its divisors is an integer number (91666032).

Almost surely, 2^638846327 is an apocalyptic number.

638846327 is a deficient number, since it is larger than the sum of its proper divisors (94481929).

638846327 is a wasteful number, since it uses less digits than its factorization.

638846327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402277.

The product of its digits is 1161216, while the sum is 47.

The square root of 638846327 is about 25275.4095317959. The cubic root of 638846327 is about 861.2557493246.

The spelling of 638846327 in words is "six hundred thirty-eight million, eight hundred forty-six thousand, three hundred twenty-seven".