63798947 has 4 divisors (see below), whose sum is σ = 63826776. Its totient is φ = 63771120.

The previous prime is 63798919. The next prime is 63798983. The reversal of 63798947 is 74989736.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63798947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63798907) 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 3 ways as a sum of consecutive naturals, for example, 10133 + ... + 15174.

It is an arithmetic number, because the mean of its divisors is an integer number (15956694).

Almost surely, 2^63798947 is an apocalyptic number.

63798947 is a deficient number, since it is larger than the sum of its proper divisors (27829).

63798947 is a wasteful number, since it uses less digits than its factorization.

63798947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27828.

The product of its digits is 2286144, while the sum is 53.

The square root of 63798947 is about 7987.4243032407. The cubic root of 63798947 is about 399.5807002061.

The spelling of 63798947 in words is "sixty-three million, seven hundred ninety-eight thousand, nine hundred forty-seven".