663471463 has 4 divisors (see below), whose sum is σ = 663865048. Its totient is φ = 663077880.

The previous prime is 663471443. The next prime is 663471491. The reversal of 663471463 is 364174366.

It is a happy number.

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-663471463 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 (663471443) 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, 194253 + ... + 197638.

It is an arithmetic number, because the mean of its divisors is an integer number (165966262).

Almost surely, 2^663471463 is an apocalyptic number.

663471463 is a deficient number, since it is larger than the sum of its proper divisors (393585).

663471463 is a wasteful number, since it uses less digits than its factorization.

663471463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393584.

The product of its digits is 217728, while the sum is 40.

The square root of 663471463 is about 25757.9398050388. The cubic root of 663471463 is about 872.1825953613.

The spelling of 663471463 in words is "six hundred sixty-three million, four hundred seventy-one thousand, four hundred sixty-three".