63105289 has 8 divisors (see below), whose sum is σ = 71536640. Its totient is φ = 55184976.

The previous prime is 63105269. The next prime is 63105323. The reversal of 63105289 is 98250136.

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 63105289 - 2⁵ = 63105257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63105269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127497 + ... + 127990.

It is an arithmetic number, because the mean of its divisors is an integer number (8942080).

Almost surely, 2^63105289 is an apocalyptic number.

It is an amenable number.

63105289 is a deficient number, since it is larger than the sum of its proper divisors (8431351).

63105289 is a wasteful number, since it uses less digits than its factorization.

63105289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255519.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 63105289 is about 7943.8837478906. The cubic root of 63105289 is about 398.1272645884.

The spelling of 63105289 in words is "sixty-three million, one hundred five thousand, two hundred eighty-nine".