630001 has 4 divisors (see below), whose sum is σ = 639472. Its totient is φ = 620532.

The previous prime is 629989. The next prime is 630017. The reversal of 630001 is 100036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630001 - 2⁷ = 629873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630001.

It is not an unprimeable number, because it can be changed into a prime (630101) 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, 4635 + ... + 4768.

It is an arithmetic number, because the mean of its divisors is an integer number (159868).

2⁶³⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

630001 is a deficient number, since it is larger than the sum of its proper divisors (9471).

630001 is an equidigital number, since it uses as much as digits as its factorization.

630001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 630001 is about 793.7260232599. The cubic root of 630001 is about 85.7262341809.

Adding to 630001 its reverse (100036), we get a palindrome (730037).

It can be divided in two parts, 63000 and 1, that added together give a square (63001 = 251²).

The spelling of 630001 in words is "six hundred thirty thousand, one".