638027 has 8 divisors (see below), whose sum is σ = 727776. Its totient is φ = 554112.

The previous prime is 638023. The next prime is 638047. The reversal of 638027 is 720836.

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

It is not a de Polignac number, because 638027 - 2² = 638023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 637987 and 638005.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638027.

It is not an unprimeable number, because it can be changed into a prime (638023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (90972).

2⁶³⁸⁰²⁷ is an apocalyptic number.

638027 is a deficient number, since it is larger than the sum of its proper divisors (89749).

638027 is a wasteful number, since it uses less digits than its factorization.

638027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 638027 is about 798.7659231590. The cubic root of 638027 is about 86.0887402018.

The spelling of 638027 in words is "six hundred thirty-eight thousand, twenty-seven".