506638 has 8 divisors (see below), whose sum is σ = 829080. Its totient is φ = 230280.

The previous prime is 506629. The next prime is 506647. The reversal of 506638 is 836605.

It is an interprime number because it is at equal distance from previous prime (506629) and next prime (506647).

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

It is a congruent number.

It is an unprimeable number.

506638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11493 + ... + 11536.

It is an arithmetic number, because the mean of its divisors is an integer number (103635).

2⁵⁰⁶⁶³⁸ is an apocalyptic number.

506638 is a deficient number, since it is larger than the sum of its proper divisors (322442).

506638 is a wasteful number, since it uses less digits than its factorization.

506638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23042.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 506638 is about 711.7850799223. The cubic root of 506638 is about 79.7197485522.

The spelling of 506638 in words is "five hundred six thousand, six hundred thirty-eight".