630140663 has 4 divisors (see below), whose sum is σ = 635921880. Its totient is φ = 624359448.

The previous prime is 630140657. The next prime is 630140671. The reversal of 630140663 is 366041036.

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 630140663 - 2⁴ = 630140647 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 (630140363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890445 + ... + 2890662.

It is an arithmetic number, because the mean of its divisors is an integer number (158980470).

Almost surely, 2^630140663 is an apocalyptic number.

630140663 is a deficient number, since it is larger than the sum of its proper divisors (5781217).

630140663 is a wasteful number, since it uses less digits than its factorization.

630140663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5781216.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 630140663 is about 25102.6027136630. The cubic root of 630140663 is about 857.3256850861.

Adding to 630140663 its reverse (366041036), we get a palindrome (996181699).

It can be divided in two parts, 6301 and 40663, that added together give a palindrome (46964).

The spelling of 630140663 in words is "six hundred thirty million, one hundred forty thousand, six hundred sixty-three".