630565237 has 2 divisors, whose sum is σ = 630565238. Its totient is φ = 630565236.

The previous prime is 630565213. The next prime is 630565289. The reversal of 630565237 is 732565036.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630562321 + 2916 = 25111^2 + 54^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630565237 is a prime.

It is a super-2 number, since 2×630565237² = 795225036225732338, which contains 22 as substring.

It is equal to p_32835196 and since 630565237 and 32835196 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 630565196 and 630565205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630562237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315282618 + 315282619.

It is an arithmetic number, because the mean of its divisors is an integer number (315282619).

Almost surely, 2^630565237 is an apocalyptic number.

It is an amenable number.

630565237 is a deficient number, since it is larger than the sum of its proper divisors (1).

630565237 is an equidigital number, since it uses as much as digits as its factorization.

630565237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 37.

The square root of 630565237 is about 25111.0580621367. The cubic root of 630565237 is about 857.5181905040.

The spelling of 630565237 in words is "six hundred thirty million, five hundred sixty-five thousand, two hundred thirty-seven".