63683505 has 24 divisors (see below), whose sum is σ = 111632040. Its totient is φ = 33580800.

The previous prime is 63683483. The next prime is 63683509. The reversal of 63683505 is 50538636.

It can be written as a sum of positive squares in 4 ways, for example, as 15116544 + 48566961 = 3888^2 + 6969^2 .

It is not a de Polignac number, because 63683505 - 2⁶ = 63683441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63683505.

It is not an unprimeable number, because it can be changed into a prime (63683509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3946 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (4651335).

Almost surely, 2^63683505 is an apocalyptic number.

It is an amenable number.

63683505 is a deficient number, since it is larger than the sum of its proper divisors (47948535).

63683505 is a wasteful number, since it uses less digits than its factorization.

63683505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16001 (or 15998 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 63683505 is about 7980.1945465007. The cubic root of 63683505 is about 399.3395455165.

The spelling of 63683505 in words is "sixty-three million, six hundred eighty-three thousand, five hundred five".