630611121 has 16 divisors (see below), whose sum is σ = 1011507200. Its totient is φ = 341383248.

The previous prime is 630611089. The next prime is 630611129. The reversal of 630611121 is 121116036.

630611121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 630611121 - 2⁵ = 630611089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630611129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789841 + ... + 790638.

It is an arithmetic number, because the mean of its divisors is an integer number (63219200).

Almost surely, 2^630611121 is an apocalyptic number.

It is an amenable number.

630611121 is a deficient number, since it is larger than the sum of its proper divisors (380896079).

630611121 is a wasteful number, since it uses less digits than its factorization.

630611121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580508.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 630611121 is about 25111.9716669162. The cubic root of 630611121 is about 857.5389895205.

Adding to 630611121 its reverse (121116036), we get a palindrome (751727157).

The spelling of 630611121 in words is "six hundred thirty million, six hundred eleven thousand, one hundred twenty-one".