530644 has 6 divisors (see below), whose sum is σ = 928634. Its totient is φ = 265320.

The previous prime is 530641. The next prime is 530653. The reversal of 530644 is 446035.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 184900 = 588^2 + 430^2 .

It is an Ulam number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66327 + ... + 66334.

2⁵³⁰⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

530644 is a deficient number, since it is larger than the sum of its proper divisors (397990).

530644 is a wasteful number, since it uses less digits than its factorization.

530644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132665 (or 132663 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 530644 is about 728.4531556662. The cubic root of 530644 is about 80.9594879464.

Adding to 530644 its reverse (446035), we get a palindrome (976679).

The spelling of 530644 in words is "five hundred thirty thousand, six hundred forty-four".