630806500 has 48 divisors (see below), whose sum is σ = 1383323760. Its totient is φ = 251289600.

The previous prime is 630806497. The next prime is 630806531. The reversal of 630806500 is 5608036.

It can be written as a sum of positive squares in 8 ways, for example, as 3504384 + 627302116 = 1872^2 + 25046^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126046 + ... + 130954.

It is an arithmetic number, because the mean of its divisors is an integer number (28819245).

Almost surely, 2^630806500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630806500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691661880).

630806500 is an abundant number, since it is smaller than the sum of its proper divisors (752517260).

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

630806500 is a wasteful number, since it uses less digits than its factorization.

630806500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185 (or 5173 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 630806500 is about 25115.8615221537. The cubic root of 630806500 is about 857.6275426739.

The spelling of 630806500 in words is "six hundred thirty million, eight hundred six thousand, five hundred".