630394 has 8 divisors (see below), whose sum is σ = 1001268. Its totient is φ = 296640.

The previous prime is 630391. The next prime is 630433. The reversal of 630394 is 493036.

It can be written as a sum of positive squares in 2 ways, for example, as 619369 + 11025 = 787^2 + 105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (630391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9237 + ... + 9304.

2⁶³⁰³⁹⁴ is an apocalyptic number.

630394 is a deficient number, since it is larger than the sum of its proper divisors (370874).

630394 is a wasteful number, since it uses less digits than its factorization.

630394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18560.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 630394 is about 793.9735511968. The cubic root of 630394 is about 85.7440560611.

It can be divided in two parts, 630 and 394, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 630394 in words is "six hundred thirty thousand, three hundred ninety-four".