630000000 has 384 divisors, whose sum is σ = 2589837120. Its totient is φ = 144000000.

The previous prime is 629999983. The next prime is 630000013. The reversal of 630000000 is 36.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

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, 89999997 + ... + 90000003.

Almost surely, 2^630000000 is an apocalyptic number.

630000000 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 630000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294918560).

630000000 is an abundant number, since it is smaller than the sum of its proper divisors (1959837120).

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

630000000 is an frugal number, since it uses more digits than its factorization.

630000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 630000000 is about 25099.8007960223. The cubic root of 630000000 is about 857.2618882313.

Adding to 630000000 its reverse (36), we get a palindrome (630000036).

The spelling of 630000000 in words is "six hundred thirty million", and thus it is an aban number.