630166 has 4 divisors (see below), whose sum is σ = 945252. Its totient is φ = 315082.

The previous prime is 630163. The next prime is 630167. The reversal of 630166 is 661036.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630163) 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 as a sum of consecutive naturals, namely, 157540 + ... + 157543.

It is an arithmetic number, because the mean of its divisors is an integer number (236313).

2⁶³⁰¹⁶⁶ is an apocalyptic number.

630166 is a deficient number, since it is larger than the sum of its proper divisors (315086).

630166 is a wasteful number, since it uses less digits than its factorization.

630166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315085.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 630166 is about 793.8299566028. The cubic root of 630166 is about 85.7337175520.

The spelling of 630166 in words is "six hundred thirty thousand, one hundred sixty-six".