63699 has 8 divisors (see below), whose sum is σ = 90000. Its totient is φ = 39936.

The previous prime is 63697. The next prime is 63703. The reversal of 63699 is 99636.

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

It is not a de Polignac number, because 63699 - 2¹ = 63697 is a prime.

63699 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 63699.

It is not an unprimeable number, because it can be changed into a prime (63691) 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, 574 + ... + 675.

It is an arithmetic number, because the mean of its divisors is an integer number (11250).

2⁶³⁶⁹⁹ is an apocalyptic number.

63699 is a deficient number, since it is larger than the sum of its proper divisors (26301).

63699 is a wasteful number, since it uses less digits than its factorization.

63699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 8748, while the sum is 33.

The square root of 63699 is about 252.3866082026. The cubic root of 63699 is about 39.9371931006.

Subtracting 63699 from its reverse (99636), we obtain a cube (35937 = 33³).

The spelling of 63699 in words is "sixty-three thousand, six hundred ninety-nine".