63506120 has 16 divisors (see below), whose sum is σ = 142888860. Its totient is φ = 25402432.

The previous prime is 63506119. The next prime is 63506129. The reversal of 63506120 is 2160536.

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 5654884 = 7606^2 + 2378^2 .

It is not an unprimeable number, because it can be changed into a prime (63506129) 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 3 ways as a sum of consecutive naturals, for example, 793787 + ... + 793866.

Almost surely, 2^63506120 is an apocalyptic number.

It is an amenable number.

63506120 is an abundant number, since it is smaller than the sum of its proper divisors (79382740).

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

63506120 is a wasteful number, since it uses less digits than its factorization.

63506120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587664 (or 1587660 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 63506120 is about 7969.0727189554. The cubic root of 63506120 is about 398.9684252542.

Adding to 63506120 its reverse (2160536), we get a palindrome (65666656).

The spelling of 63506120 in words is "sixty-three million, five hundred six thousand, one hundred twenty".