63133720 has 64 divisors (see below), whose sum is σ = 153861120. Its totient is φ = 23176704.

The previous prime is 63133703. The next prime is 63133723. The reversal of 63133720 is 2733136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63133723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164649 + ... + 165031.

It is an arithmetic number, because the mean of its divisors is an integer number (2404080).

Almost surely, 2^63133720 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 63133720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76930560).

63133720 is an abundant number, since it is smaller than the sum of its proper divisors (90727400).

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

63133720 is a wasteful number, since it uses less digits than its factorization.

63133720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 63133720 is about 7945.6730363135. The cubic root of 63133720 is about 398.1870454033.

Adding to 63133720 its reverse (2733136), we get a palindrome (65866856).

The spelling of 63133720 in words is "sixty-three million, one hundred thirty-three thousand, seven hundred twenty".