63642320 has 40 divisors (see below), whose sum is σ = 169108224. Its totient is φ = 21820032.

The previous prime is 63642283. The next prime is 63642323. The reversal of 63642320 is 2324636.

63642320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 63642320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642323) 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 7 ways as a sum of consecutive naturals, for example, 56264 + ... + 57383.

Almost surely, 2^63642320 is an apocalyptic number.

It is an amenable number.

63642320 is an abundant number, since it is smaller than the sum of its proper divisors (105465904).

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

63642320 is a wasteful number, since it uses less digits than its factorization.

63642320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113667 (or 113661 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 63642320 is about 7977.6136782875. The cubic root of 63642320 is about 399.2534408237.

Adding to 63642320 its reverse (2324636), we get a palindrome (65966956).

The spelling of 63642320 in words is "sixty-three million, six hundred forty-two thousand, three hundred twenty".