63591 has 16 divisors (see below), whose sum is σ = 96768. Its totient is φ = 36800.

The previous prime is 63589. The next prime is 63599. The reversal of 63591 is 19536.

It is a cyclic number.

It is not a de Polignac number, because 63591 - 2¹ = 63589 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1330 + ... + 1376.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

2⁶³⁵⁹¹ is an apocalyptic number.

63591 is a deficient number, since it is larger than the sum of its proper divisors (33177).

63591 is a wasteful number, since it uses less digits than its factorization.

63591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102.

The product of its digits is 810, while the sum is 24.

The square root of 63591 is about 252.1725599664. The cubic root of 63591 is about 39.9146095080.

The spelling of 63591 in words is "sixty-three thousand, five hundred ninety-one".