630544 has 10 divisors (see below), whose sum is σ = 1221710. Its totient is φ = 315264.

The previous prime is 630529. The next prime is 630559. The reversal of 630544 is 445036.

It is an interprime number because it is at equal distance from previous prime (630529) and next prime (630559).

It can be written as a sum of positive squares in only one way, i.e., 547600 + 82944 = 740^2 + 288^2 .

It is an unprimeable number.

630544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19689 + ... + 19720.

It is an arithmetic number, because the mean of its divisors is an integer number (122171).

2⁶³⁰⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

630544 is a deficient number, since it is larger than the sum of its proper divisors (591166).

630544 is a wasteful number, since it uses less digits than its factorization.

630544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39417 (or 39411 counting only the distinct ones).

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

The square root of 630544 is about 794.0680071631. The cubic root of 630544 is about 85.7508563523.

The spelling of 630544 in words is "six hundred thirty thousand, five hundred forty-four".