63899 has 8 divisors (see below), whose sum is σ = 72048. Its totient is φ = 56160.

The previous prime is 63863. The next prime is 63901. The reversal of 63899 is 99836.

63899 = T₄₅ + T₄₆ + ... + T₇₇.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63899 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (63809) 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 7 ways as a sum of consecutive naturals, for example, 329 + ... + 485.

It is an arithmetic number, because the mean of its divisors is an integer number (9006).

2⁶³⁸⁹⁹ is an apocalyptic number.

63899 is a deficient number, since it is larger than the sum of its proper divisors (8149).

63899 is a wasteful number, since it uses less digits than its factorization.

63899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205.

The product of its digits is 11664, while the sum is 35.

The square root of 63899 is about 252.7825152181. The cubic root of 63899 is about 39.9789472548.

Subtracting 63899 from its reverse (99836), we obtain a cube (35937 = 33³).

It can be divided in two parts, 638 and 99, that added together give a palindrome (737).

The spelling of 63899 in words is "sixty-three thousand, eight hundred ninety-nine".