630565345 has 4 divisors (see below), whose sum is σ = 756678420. Its totient is φ = 504452272.

The previous prime is 630565339. The next prime is 630565387. The reversal of 630565345 is 543565036.

630565345 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 503867809 + 126697536 = 22447^2 + 11256^2 .

It is a cyclic number.

It is not a de Polignac number, because 630565345 - 2¹³ = 630557153 is a prime.

It is a super-2 number, since 2×630565345² = 795225308629938050, which contains 22 as substring.

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, 63056530 + ... + 63056539.

It is an arithmetic number, because the mean of its divisors is an integer number (189169605).

Almost surely, 2^630565345 is an apocalyptic number.

It is an amenable number.

630565345 is a deficient number, since it is larger than the sum of its proper divisors (126113075).

630565345 is a wasteful number, since it uses less digits than its factorization.

630565345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126113074.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 630565345 is about 25111.0602125836. The cubic root of 630565345 is about 857.5182394611.

The spelling of 630565345 in words is "six hundred thirty million, five hundred sixty-five thousand, three hundred forty-five".