63260640 has 144 divisors (see below), whose sum is σ = 217945728. Its totient is φ = 16708608.

The previous prime is 63260627. The next prime is 63260669. The reversal of 63260640 is 4606236.

63260640 is nontrivially palindromic in base 11.

63260640 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 (144).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 283569 + ... + 283791.

It is an arithmetic number, because the mean of its divisors is an integer number (1513512).

Almost surely, 2^63260640 is an apocalyptic number.

63260640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63260640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108972864).

63260640 is an abundant number, since it is smaller than the sum of its proper divisors (154685088).

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

63260640 is a wasteful number, since it uses less digits than its factorization.

63260640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 63260640 is about 7953.6557632324. The cubic root of 63260640 is about 398.4536967349.

Adding to 63260640 its reverse (4606236), we get a palindrome (67866876).

The spelling of 63260640 in words is "sixty-three million, two hundred sixty thousand, six hundred forty".