63447 has 4 divisors (see below), whose sum is σ = 84600. Its totient is φ = 42296.

The previous prime is 63443. The next prime is 63463. The reversal of 63447 is 74436.

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 63447 - 2² = 63443 is a prime.

It is a D-number.

63447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10572 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (21150).

2⁶³⁴⁴⁷ is an apocalyptic number.

63447 is a deficient number, since it is larger than the sum of its proper divisors (21153).

63447 is a wasteful number, since it uses less digits than its factorization.

63447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21152.

The product of its digits is 2016, while the sum is 24.

The square root of 63447 is about 251.8868793725. The cubic root of 63447 is about 39.8844582406.

The spelling of 63447 in words is "sixty-three thousand, four hundred forty-seven".