63120505 has 16 divisors (see below), whose sum is σ = 86765184. Its totient is φ = 43182720.

The previous prime is 63120503. The next prime is 63120511. The reversal of 63120505 is 50502136.

It is a happy number.

63120505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63120505 - 2¹ = 63120503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63120503) 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 15 ways as a sum of consecutive naturals, for example, 15349 + ... + 19021.

It is an arithmetic number, because the mean of its divisors is an integer number (5422824).

Almost surely, 2^63120505 is an apocalyptic number.

It is an amenable number.

63120505 is a deficient number, since it is larger than the sum of its proper divisors (23644679).

63120505 is a wasteful number, since it uses less digits than its factorization.

63120505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 63120505 is about 7944.8414081088. The cubic root of 63120505 is about 398.1592609431.

The spelling of 63120505 in words is "sixty-three million, one hundred twenty thousand, five hundred five".