64823 has 8 divisors (see below), whose sum is σ = 72576. Its totient is φ = 57400.

The previous prime is 64817. The next prime is 64849. The reversal of 64823 is 32846.

64823 = T₂ + T₃ + ... + T₇₂.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64823 - 2⁸ = 64567 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64823.

It is not an unprimeable number, because it can be changed into a prime (64853) 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, 740 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2⁶⁴⁸²³ is an apocalyptic number.

64823 is a deficient number, since it is larger than the sum of its proper divisors (7753).

64823 is a wasteful number, since it uses less digits than its factorization.

64823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its digits is 1152, while the sum is 23.

The square root of 64823 is about 254.6036134857. The cubic root of 64823 is about 40.1707285903.

Adding to 64823 its sum of digits (23), we get a palindrome (64846).

The spelling of 64823 in words is "sixty-four thousand, eight hundred twenty-three".