630659 has 2 divisors, whose sum is σ = 630660.
Its totient is φ = 630658.
The previous prime is 630613. The next prime is 630677. The reversal of 630659 is 956036.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-630659 is a prime.
It is a Chen prime.
It is an Ulam number.
It is not a weakly prime, because it can be changed into another prime (630689) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315329 + 315330.
It is an arithmetic number, because the mean of its divisors is an integer number (315330).
2630659 is an apocalyptic number.
630659 is a deficient number, since it is larger than the sum of its proper divisors (1).
630659 is an equidigital number, since it uses as much as digits as its factorization.
630659 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4860, while the sum is 29.
The square root of 630659 is about 794.1404157956.
The cubic root of 630659 is about 85.7560691786.
The spelling of 630659 in words is "six hundred thirty thousand, six hundred fifty-nine".