630816803 has 4 divisors (see below), whose sum is σ = 630902688. Its totient is φ = 630730920.

The previous prime is 630816779. The next prime is 630816829. The reversal of 630816803 is 308618036.

It is a happy number.

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 630816803 - 2¹⁶ = 630751267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630816103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30776 + ... + 46997.

It is an arithmetic number, because the mean of its divisors is an integer number (157725672).

Almost surely, 2^630816803 is an apocalyptic number.

630816803 is a deficient number, since it is larger than the sum of its proper divisors (85885).

630816803 is an equidigital number, since it uses as much as digits as its factorization.

630816803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85884.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 630816803 is about 25116.0666307446. The cubic root of 630816803 is about 857.6322118756.

The spelling of 630816803 in words is "six hundred thirty million, eight hundred sixteen thousand, eight hundred three".