63116561 has 8 divisors (see below), whose sum is σ = 66331584. Its totient is φ = 59981040.

The previous prime is 63116551. The next prime is 63116567. The reversal of 63116561 is 16561136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63116561 - 2¹⁰ = 63115537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63116567) 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 7 ways as a sum of consecutive naturals, for example, 18245 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (8291448).

Almost surely, 2^63116561 is an apocalyptic number.

It is an amenable number.

63116561 is a deficient number, since it is larger than the sum of its proper divisors (3215023).

63116561 is a wasteful number, since it uses less digits than its factorization.

63116561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39751.

The product of its digits is 3240, while the sum is 29.

The square root of 63116561 is about 7944.5931928576. The cubic root of 63116561 is about 398.1509679548.

Adding to 63116561 its reverse (16561136), we get a palindrome (79677697).

The spelling of 63116561 in words is "sixty-three million, one hundred sixteen thousand, five hundred sixty-one".