65684 has 6 divisors (see below), whose sum is σ = 114954. Its totient is φ = 32840.

The previous prime is 65677. The next prime is 65687. The reversal of 65684 is 48656.

It can be written as a sum of positive squares in only one way, i.e., 36100 + 29584 = 190^2 + 172^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8207 + ... + 8214.

It is an arithmetic number, because the mean of its divisors is an integer number (19159).

2⁶⁵⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

65684 is a deficient number, since it is larger than the sum of its proper divisors (49270).

65684 is a wasteful number, since it uses less digits than its factorization.

65684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16425 (or 16423 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 65684 is about 256.2888994865. The cubic root of 65684 is about 40.3478004397.

The spelling of 65684 in words is "sixty-five thousand, six hundred eighty-four".