630863 has 2 divisors, whose sum is σ = 630864. Its totient is φ = 630862.

The previous prime is 630841. The next prime is 630871. The reversal of 630863 is 368036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630863 - 2⁸ = 630607 is a prime.

It is a Chen prime.

It is equal to p₅₁₃₉₈ and since 630863 and 51398 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315431 + 315432.

It is an arithmetic number, because the mean of its divisors is an integer number (315432).

2⁶³⁰⁸⁶³ is an apocalyptic number.

630863 is a deficient number, since it is larger than the sum of its proper divisors (1).

630863 is an equidigital number, since it uses as much as digits as its factorization.

630863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 630863 is about 794.2688461724. The cubic root of 630863 is about 85.7653147203.

Adding to 630863 its reverse (368036), we get a palindrome (998899).

The spelling of 630863 in words is "six hundred thirty thousand, eight hundred sixty-three".