64340 has 12 divisors (see below), whose sum is σ = 135156. Its totient is φ = 25728.

The previous prime is 64333. The next prime is 64373. The reversal of 64340 is 4346.

It can be written as a sum of positive squares in 2 ways, for example, as 42436 + 21904 = 206^2 + 148^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

64340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (11263).

2⁶⁴³⁴⁰ is an apocalyptic number.

It is an amenable number.

64340 is an abundant number, since it is smaller than the sum of its proper divisors (70816).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67578).

64340 is a wasteful number, since it uses less digits than its factorization.

64340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 64340 is about 253.6533067003. The cubic root of 64340 is about 40.0707082682.

Adding to 64340 its reverse (4346), we get a palindrome (68686).

It can be divided in two parts, 64 and 340, that added together give a palindrome (404).

The spelling of 64340 in words is "sixty-four thousand, three hundred forty".