63105641 has 4 divisors (see below), whose sum is σ = 63664212. Its totient is φ = 62547072.

The previous prime is 63105619. The next prime is 63105643. The reversal of 63105641 is 14650136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11323225 + 51782416 = 3365^2 + 7196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63105641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63105641.

It is not an unprimeable number, because it can be changed into a prime (63105643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279116 + ... + 279341.

It is an arithmetic number, because the mean of its divisors is an integer number (15916053).

Almost surely, 2^63105641 is an apocalyptic number.

It is an amenable number.

63105641 is a deficient number, since it is larger than the sum of its proper divisors (558571).

63105641 is a wasteful number, since it uses less digits than its factorization.

63105641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558570.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 63105641 is about 7943.9059032695. The cubic root of 63105641 is about 398.1280048356.

Adding to 63105641 its reverse (14650136), we get a palindrome (77755777).

The spelling of 63105641 in words is "sixty-three million, one hundred five thousand, six hundred forty-one".