633707680 has 24 divisors (see below), whose sum is σ = 1497134772. Its totient is φ = 253483008.

The previous prime is 633707663. The next prime is 633707689. The reversal of 633707680 is 86707336.

It can be written as a sum of positive squares in 2 ways, for example, as 626801296 + 6906384 = 25036^2 + 2628^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (633707689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1980177 + ... + 1980496.

Almost surely, 2^633707680 is an apocalyptic number.

It is an amenable number.

633707680 is an abundant number, since it is smaller than the sum of its proper divisors (863427092).

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

633707680 is a wasteful number, since it uses less digits than its factorization.

633707680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960688 (or 3960680 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 633707680 is about 25173.5511996222. The cubic root of 633707680 is about 858.9403209199.

The spelling of 633707680 in words is "six hundred thirty-three million, seven hundred seven thousand, six hundred eighty".