630542 has 8 divisors (see below), whose sum is σ = 1031832. Its totient is φ = 286600.

The previous prime is 630529. The next prime is 630559. The reversal of 630542 is 245036.

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

It is a congruent number.

It is an unprimeable number.

630542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 14309 + ... + 14352.

It is an arithmetic number, because the mean of its divisors is an integer number (128979).

2⁶³⁰⁵⁴² is an apocalyptic number.

630542 is a deficient number, since it is larger than the sum of its proper divisors (401290).

630542 is a wasteful number, since it uses less digits than its factorization.

630542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28674.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 630542 is about 794.0667478241. The cubic root of 630542 is about 85.7507656889.

Adding to 630542 its reverse (245036), we get a palindrome (875578).

The spelling of 630542 in words is "six hundred thirty thousand, five hundred forty-two".