630194 has 4 divisors (see below), whose sum is σ = 945294. Its totient is φ = 315096.

The previous prime is 630193. The next prime is 630197. The reversal of 630194 is 491036.

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

It can be written as a sum of positive squares in only one way, i.e., 543169 + 87025 = 737^2 + 295^2 .

It is not an unprimeable number, because it can be changed into a prime (630193) 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, 157547 + ... + 157550.

2⁶³⁰¹⁹⁴ is an apocalyptic number.

630194 is a deficient number, since it is larger than the sum of its proper divisors (315100).

630194 is a wasteful number, since it uses less digits than its factorization.

630194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315099.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 630194 is about 793.8475924256. The cubic root of 630194 is about 85.7349873278.

The spelling of 630194 in words is "six hundred thirty thousand, one hundred ninety-four".