630554 has 8 divisors (see below), whose sum is σ = 971508. Its totient is φ = 306720.

The previous prime is 630529. The next prime is 630559. The reversal of 630554 is 455036.

It can be written as a sum of positive squares in 2 ways, for example, as 600625 + 29929 = 775^2 + 173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 630554.

It is not an unprimeable number, because it can be changed into a prime (630559) 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 in 3 ways as a sum of consecutive naturals, for example, 4187 + ... + 4334.

2⁶³⁰⁵⁵⁴ is an apocalyptic number.

630554 is a deficient number, since it is larger than the sum of its proper divisors (340954).

630554 is a wasteful number, since it uses less digits than its factorization.

630554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 630554 is about 794.0743038280. The cubic root of 630554 is about 85.7513096667.

The spelling of 630554 in words is "six hundred thirty thousand, five hundred fifty-four".