630808 has 16 divisors (see below), whose sum is σ = 1224000. Its totient is φ = 304416.

The previous prime is 630803. The next prime is 630823. The reversal of 630808 is 808036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630803) by changing a digit.

630808 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, 1128 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (76500).

2⁶³⁰⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

630808 is a deficient number, since it is larger than the sum of its proper divisors (593192).

630808 is a wasteful number, since it uses less digits than its factorization.

630808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754 (or 2750 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 630808 is about 794.2342223803. The cubic root of 630808 is about 85.7628222460.

The spelling of 630808 in words is "six hundred thirty thousand, eight hundred eight".