630667700 has 72 divisors (see below), whose sum is σ = 1560571992. Its totient is φ = 219156480.

The previous prime is 630667691. The next prime is 630667747. The reversal of 630667700 is 7766036.

It can be written as a sum of positive squares in 12 ways, for example, as 320696464 + 309971236 = 17908^2 + 17606^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7832 + ... + 36368.

It is an arithmetic number, because the mean of its divisors is an integer number (21674611).

Almost surely, 2^630667700 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 630667700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780285996).

630667700 is an abundant number, since it is smaller than the sum of its proper divisors (929904292).

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

630667700 is a wasteful number, since it uses less digits than its factorization.

630667700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28581 (or 28574 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 630667700 is about 25113.0981760515. The cubic root of 630667700 is about 857.5646351447.

The spelling of 630667700 in words is "six hundred thirty million, six hundred sixty-seven thousand, seven hundred".