630399 has 16 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 327360.

The previous prime is 630391. The next prime is 630433. The reversal of 630399 is 993036.

It is not a de Polignac number, because 630399 - 2³ = 630391 is a prime.

630399 is a lucky number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1134 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2⁶³⁰³⁹⁹ is an apocalyptic number.

630399 is a deficient number, since it is larger than the sum of its proper divisors (417921).

630399 is a wasteful number, since it uses less digits than its factorization.

630399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 630399 is about 793.9766999100. The cubic root of 630399 is about 85.7442827548.

The spelling of 630399 in words is "six hundred thirty thousand, three hundred ninety-nine".