63847 has 6 divisors (see below), whose sum is σ = 74328. Its totient is φ = 54684.

The previous prime is 63841. The next prime is 63853. The reversal of 63847 is 74836.

It is an interprime number because it is at equal distance from previous prime (63841) and next prime (63853).

It is not a de Polignac number, because 63847 - 2³ = 63839 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 (63841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 603 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (12388).

2⁶³⁸⁴⁷ is an apocalyptic number.

63847 is a deficient number, since it is larger than the sum of its proper divisors (10481).

63847 is a wasteful number, since it uses less digits than its factorization.

63847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1310 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 63847 is about 252.6796390689. The cubic root of 63847 is about 39.9680995658.

It can be divided in two parts, 63 and 847, that multiplied together give a square (53361 = 231²).

The spelling of 63847 in words is "sixty-three thousand, eight hundred forty-seven".