63478847 has 4 divisors (see below), whose sum is σ = 63553776. Its totient is φ = 63403920.

The previous prime is 63478841. The next prime is 63478859. The reversal of 63478847 is 74887436.

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

It is a cyclic number.

It is not a de Polignac number, because 63478847 - 2¹⁰ = 63477823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63478841) 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, 36179 + ... + 37892.

It is an arithmetic number, because the mean of its divisors is an integer number (15888444).

Almost surely, 2^63478847 is an apocalyptic number.

63478847 is a deficient number, since it is larger than the sum of its proper divisors (74929).

63478847 is an equidigital number, since it uses as much as digits as its factorization.

63478847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74928.

The product of its digits is 903168, while the sum is 47.

The square root of 63478847 is about 7967.3613574382. The cubic root of 63478847 is about 398.9113041249.

The spelling of 63478847 in words is "sixty-three million, four hundred seventy-eight thousand, eight hundred forty-seven".