63539 has 8 divisors (see below), whose sum is σ = 75360. Its totient is φ = 52416.

The previous prime is 63533. The next prime is 63541. The reversal of 63539 is 93536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63539 - 2¹² = 59443 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (63533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47 + ... + 359.

It is an arithmetic number, because the mean of its divisors is an integer number (9420).

2⁶³⁵³⁹ is an apocalyptic number.

63539 is a deficient number, since it is larger than the sum of its proper divisors (11821).

63539 is a wasteful number, since it uses less digits than its factorization.

63539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 2430, while the sum is 26.

The square root of 63539 is about 252.0694348786. The cubic root of 63539 is about 39.9037268060.

The spelling of 63539 in words is "sixty-three thousand, five hundred thirty-nine".