630529 has 2 divisors, whose sum is σ = 630530. Its totient is φ = 630528.

The previous prime is 630523. The next prime is 630559. The reversal of 630529 is 925036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 65025 = 752^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 630529 - 2³ = 630521 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (630521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315264 + 315265.

It is an arithmetic number, because the mean of its divisors is an integer number (315265).

2⁶³⁰⁵²⁹ is an apocalyptic number.

It is an amenable number.

630529 is a deficient number, since it is larger than the sum of its proper divisors (1).

630529 is an equidigital number, since it uses as much as digits as its factorization.

630529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 630529 is about 794.0585620721. The cubic root of 630529 is about 85.7501763717.

The spelling of 630529 in words is "six hundred thirty thousand, five hundred twenty-nine".