630545403 has 4 divisors (see below), whose sum is σ = 840727208. Its totient is φ = 420363600.

The previous prime is 630545389. The next prime is 630545413. The reversal of 630545403 is 304545036.

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

It is not a de Polignac number, because 630545403 - 2⁴ = 630545387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630545413) 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, 105090898 + ... + 105090903.

It is an arithmetic number, because the mean of its divisors is an integer number (210181802).

Almost surely, 2^630545403 is an apocalyptic number.

630545403 is a deficient number, since it is larger than the sum of its proper divisors (210181805).

630545403 is a wasteful number, since it uses less digits than its factorization.

630545403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210181804.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 630545403 is about 25110.6631334180. The cubic root of 630545403 is about 857.5091995262.

The spelling of 630545403 in words is "six hundred thirty million, five hundred forty-five thousand, four hundred three".