630820063 has 4 divisors (see below), whose sum is σ = 631029208. Its totient is φ = 630610920.

The previous prime is 630820033. The next prime is 630820079. The reversal of 630820063 is 360028036.

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

It is a cyclic number.

It is not a de Polignac number, because 630820063 - 2⁵ = 630820031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630820013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99981 + ... + 106102.

It is an arithmetic number, because the mean of its divisors is an integer number (157757302).

Almost surely, 2^630820063 is an apocalyptic number.

630820063 is a deficient number, since it is larger than the sum of its proper divisors (209145).

630820063 is a wasteful number, since it uses less digits than its factorization.

630820063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209144.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 630820063 is about 25116.1315293578. The cubic root of 630820063 is about 857.6336892598.

Adding to 630820063 its reverse (360028036), we get a palindrome (990848099).

The spelling of 630820063 in words is "six hundred thirty million, eight hundred twenty thousand, sixty-three".