632660868 has 120 divisors (see below), whose sum is σ = 1955553600. Its totient is φ = 174508992.

The previous prime is 632660867. The next prime is 632660881. The reversal of 632660868 is 868066236.

632660868 is a `hidden beast` number, since 6 + 32 + 6 + 608 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (632660867) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60963 + ... + 70581.

It is an arithmetic number, because the mean of its divisors is an integer number (16296280).

Almost surely, 2^632660868 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 632660868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977776800).

632660868 is an abundant number, since it is smaller than the sum of its proper divisors (1322892732).

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

632660868 is a wasteful number, since it uses less digits than its factorization.

632660868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671 (or 9660 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 632660868 is about 25152.7507044458. The cubic root of 632660868 is about 858.4671034752.

The spelling of 632660868 in words is "six hundred thirty-two million, six hundred sixty thousand, eight hundred sixty-eight".