64984 has 8 divisors (see below), whose sum is σ = 121860. Its totient is φ = 32488.

The previous prime is 64969. The next prime is 64997. The reversal of 64984 is 48946.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

64984 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 4054 + ... + 4069.

2⁶⁴⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

64984 is a deficient number, since it is larger than the sum of its proper divisors (56876).

64984 is a wasteful number, since it uses less digits than its factorization.

64984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8129 (or 8125 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 64984 is about 254.9195951668. The cubic root of 64984 is about 40.2039582581.

The spelling of 64984 in words is "sixty-four thousand, nine hundred eighty-four".