630464845 has 12 divisors (see below), whose sum is σ = 790885116. Its totient is φ = 482440640.

The previous prime is 630464803. The next prime is 630464851. The reversal of 630464845 is 548464036.

It can be written as a sum of positive squares in 2 ways, for example, as 441924484 + 188540361 = 21022^2 + 13731^2 .

It is not a de Polignac number, because 630464845 - 2⁹ = 630464333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630464798 and 630464807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116536 + ... + 121825.

It is an arithmetic number, because the mean of its divisors is an integer number (65907093).

Almost surely, 2^630464845 is an apocalyptic number.

It is an amenable number.

630464845 is a deficient number, since it is larger than the sum of its proper divisors (160420271).

630464845 is a wasteful number, since it uses less digits than its factorization.

630464845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238412 (or 238389 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 630464845 is about 25109.0590225918. The cubic root of 630464845 is about 857.4726797303.

The spelling of 630464845 in words is "six hundred thirty million, four hundred sixty-four thousand, eight hundred forty-five".