630245305 has 4 divisors (see below), whose sum is σ = 756294372. Its totient is φ = 504196240.

The previous prime is 630245299. The next prime is 630245339. The reversal of 630245305 is 503542036.

630245305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 182034064 + 448211241 = 13492^2 + 21171^2 .

It is not a de Polignac number, because 630245305 - 2¹⁵ = 630212537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63024526 + ... + 63024535.

It is an arithmetic number, because the mean of its divisors is an integer number (189073593).

Almost surely, 2^630245305 is an apocalyptic number.

It is an amenable number.

630245305 is a deficient number, since it is larger than the sum of its proper divisors (126049067).

630245305 is a wasteful number, since it uses less digits than its factorization.

630245305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126049066.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 630245305 is about 25104.6869130049. The cubic root of 630245305 is about 857.3731386756.

The spelling of 630245305 in words is "six hundred thirty million, two hundred forty-five thousand, three hundred five".