63632140 has 96 divisors (see below), whose sum is σ = 165392640. Its totient is φ = 20217600.

The previous prime is 63632087. The next prime is 63632141. The reversal of 63632140 is 4123636.

It is not an unprimeable number, because it can be changed into a prime (63632141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53755 + ... + 54925.

It is an arithmetic number, because the mean of its divisors is an integer number (1722840).

Almost surely, 2^63632140 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 63632140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82696320).

63632140 is an abundant number, since it is smaller than the sum of its proper divisors (101760500).

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

63632140 is a wasteful number, since it uses less digits than its factorization.

63632140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 63632140 is about 7976.9756173628. The cubic root of 63632140 is about 399.2321519667.

Adding to 63632140 its reverse (4123636), we get a palindrome (67755776).

The spelling of 63632140 in words is "sixty-three million, six hundred thirty-two thousand, one hundred forty".