630001020 has 144 divisors (see below), whose sum is σ = 1959479424. Its totient is φ = 151113600.

The previous prime is 630001013. The next prime is 630001033. The reversal of 630001020 is 20100036.

630001020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 630000987 and 630001005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 776415 + ... + 777225.

It is an arithmetic number, because the mean of its divisors is an integer number (13607496).

Almost surely, 2^630001020 is an apocalyptic number.

630001020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979739712).

630001020 is an abundant number, since it is smaller than the sum of its proper divisors (1329478404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630001020 is a wasteful number, since it uses less digits than its factorization.

630001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 630001020 is about 25099.8211149004. The cubic root of 630001020 is about 857.2623508804.

Adding to 630001020 its reverse (20100036), we get a palindrome (650101056).

The spelling of 630001020 in words is "six hundred thirty million, one thousand, twenty".