64998 has 24 divisors (see below), whose sum is σ = 147888. Its totient is φ = 20592.

The previous prime is 64997. The next prime is 65003. The reversal of 64998 is 89946.

64998 is a `hidden beast` number, since 649 + 9 + 8 = 666.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (6162).

2⁶⁴⁹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73944).

64998 is an abundant number, since it is smaller than the sum of its proper divisors (82890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64998 is a wasteful number, since it uses less digits than its factorization.

64998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 185 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 64998 is about 254.9470533268. The cubic root of 64998 is about 40.2068451995.

It can be divided in two parts, 649 and 98, that added together give a palindrome (747).

The spelling of 64998 in words is "sixty-four thousand, nine hundred ninety-eight".