630428863 has 4 divisors (see below), whose sum is σ = 630479440. Its totient is φ = 630378288.

The previous prime is 630428861. The next prime is 630428893. The reversal of 630428863 is 368824036.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 630428863 - 2¹ = 630428861 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 (630428861) 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, 8131 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (157619860).

Almost surely, 2^630428863 is an apocalyptic number.

630428863 is a deficient number, since it is larger than the sum of its proper divisors (50577).

630428863 is a wasteful number, since it uses less digits than its factorization.

630428863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50576.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 630428863 is about 25108.3424980623. The cubic root of 630428863 is about 857.4563668097.

The spelling of 630428863 in words is "six hundred thirty million, four hundred twenty-eight thousand, eight hundred sixty-three".