629335649 has 2 divisors, whose sum is σ = 629335650. Its totient is φ = 629335648.

The previous prime is 629335633. The next prime is 629335657. The reversal of 629335649 is 946533926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622153249 + 7182400 = 24943^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 629335649 - 2⁴ = 629335633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (629335669) 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, 314667824 + 314667825.

It is an arithmetic number, because the mean of its divisors is an integer number (314667825).

Almost surely, 2^629335649 is an apocalyptic number.

It is an amenable number.

629335649 is a deficient number, since it is larger than the sum of its proper divisors (1).

629335649 is an equidigital number, since it uses as much as digits as its factorization.

629335649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 47.

The square root of 629335649 is about 25086.5631165371. The cubic root of 629335649 is about 856.9604474365.

The spelling of 629335649 in words is "six hundred twenty-nine million, three hundred thirty-five thousand, six hundred forty-nine".