65499 has 8 divisors (see below), whose sum is σ = 99840. Its totient is φ = 37416.

The previous prime is 65497. The next prime is 65519. The reversal of 65499 is 99456.

It is a happy number.

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

It is not a de Polignac number, because 65499 - 2¹ = 65497 is a prime.

It is a super-3 number, since 3×65499³ = 842995513339497, which contains 333 as substring.

65499 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (65497) 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, 1539 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (12480).

2⁶⁵⁴⁹⁹ is an apocalyptic number.

65499 is a deficient number, since it is larger than the sum of its proper divisors (34341).

65499 is a wasteful number, since it uses less digits than its factorization.

65499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129.

The product of its digits is 9720, while the sum is 33.

The square root of 65499 is about 255.9277241723. The cubic root of 65499 is about 40.3098847531.

It can be divided in two parts, 654 and 99, that multiplied together give a palindrome (64746).

The spelling of 65499 in words is "sixty-five thousand, four hundred ninety-nine".