632106640 has 40 divisors (see below), whose sum is σ = 1603254528. Its totient is φ = 229856640.

The previous prime is 632106613. The next prime is 632106641. The reversal of 632106640 is 46601236.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 632106599 and 632106608.

It is not an unprimeable number, because it can be changed into a prime (632106641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358272 + ... + 360031.

Almost surely, 2^632106640 is an apocalyptic number.

It is an amenable number.

632106640 is an abundant number, since it is smaller than the sum of its proper divisors (971147888).

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

632106640 is a wasteful number, since it uses less digits than its factorization.

632106640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718327 (or 718321 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 632106640 is about 25141.7310462108. The cubic root of 632106640 is about 858.2163501193.

Adding to 632106640 its reverse (46601236), we get a palindrome (678707876).

The spelling of 632106640 in words is "six hundred thirty-two million, one hundred six thousand, six hundred forty".