63893 has 4 divisors (see below), whose sum is σ = 64428. Its totient is φ = 63360.

The previous prime is 63863. The next prime is 63901. The reversal of 63893 is 39836.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9604 + 54289 = 98^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 63893 - 2¹⁰ = 62869 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63803) 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, 5 + ... + 357.

It is an arithmetic number, because the mean of its divisors is an integer number (16107).

2⁶³⁸⁹³ is an apocalyptic number.

It is an amenable number.

63893 is a deficient number, since it is larger than the sum of its proper divisors (535).

63893 is a wasteful number, since it uses less digits than its factorization.

63893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its digits is 3888, while the sum is 29.

The square root of 63893 is about 252.7706470301. The cubic root of 63893 is about 39.9776958988.

The spelling of 63893 in words is "sixty-three thousand, eight hundred ninety-three".