630506 has 8 divisors (see below), whose sum is σ = 949440. Its totient is φ = 314028.

The previous prime is 630493. The next prime is 630521. The reversal of 630506 is 605036.

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

It is an unprimeable number.

630506 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, 305 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (118680).

2⁶³⁰⁵⁰⁶ is an apocalyptic number.

630506 is a deficient number, since it is larger than the sum of its proper divisors (318934).

630506 is a wasteful number, since it uses less digits than its factorization.

630506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 630506 is about 794.0440793810. The cubic root of 630506 is about 85.7491337139.

The spelling of 630506 in words is "six hundred thirty thousand, five hundred six".