630826249 has 2 divisors, whose sum is σ = 630826250. Its totient is φ = 630826248.

The previous prime is 630826237. The next prime is 630826253. The reversal of 630826249 is 942628036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398721024 + 232105225 = 19968^2 + 15235^2 .

It is a cyclic number.

It is not a de Polignac number, because 630826249 - 2⁷ = 630826121 is a prime.

It is not a weakly prime, because it can be changed into another prime (630826349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315413124 + 315413125.

It is an arithmetic number, because the mean of its divisors is an integer number (315413125).

Almost surely, 2^630826249 is an apocalyptic number.

It is an amenable number.

630826249 is a deficient number, since it is larger than the sum of its proper divisors (1).

630826249 is an equidigital number, since it uses as much as digits as its factorization.

630826249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 630826249 is about 25116.2546770015. The cubic root of 630826249 is about 857.6364926501.

The spelling of 630826249 in words is "six hundred thirty million, eight hundred twenty-six thousand, two hundred forty-nine".