630601 has 4 divisors (see below), whose sum is σ = 632212. Its totient is φ = 628992.

The previous prime is 630593. The next prime is 630607. The reversal of 630601 is 106036.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 104976 + 525625 = 324^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 630601 - 2³ = 630593 is a prime.

It is a Duffinian number.

630601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (630607) 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, 205 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (158053).

2⁶³⁰⁶⁰¹ is an apocalyptic number.

It is an amenable number.

630601 is a deficient number, since it is larger than the sum of its proper divisors (1611).

630601 is an equidigital number, since it uses as much as digits as its factorization.

630601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 630601 is about 794.1038974845. The cubic root of 630601 is about 85.7534401802.

Adding to 630601 its reverse (106036), we get a palindrome (736637).

The spelling of 630601 in words is "six hundred thirty thousand, six hundred one".