630606 has 16 divisors (see below), whose sum is σ = 1269504. Its totient is φ = 208824.

The previous prime is 630593. The next prime is 630607. The reversal of 630606 is 606036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (79344).

2⁶³⁰⁶⁰⁶ is an apocalyptic number.

630606 is an abundant number, since it is smaller than the sum of its proper divisors (638898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630606 is a wasteful number, since it uses less digits than its factorization.

630606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 630606 is about 794.1070456809. The cubic root of 630606 is about 85.7536668244.

The spelling of 630606 in words is "six hundred thirty thousand, six hundred six".