64867 has 4 divisors (see below), whose sum is σ = 70776. Its totient is φ = 58960.

The previous prime is 64853. The next prime is 64871. The reversal of 64867 is 76846.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64867 - 2¹¹ = 62819 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (64817) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2938 + ... + 2959.

It is an arithmetic number, because the mean of its divisors is an integer number (17694).

2⁶⁴⁸⁶⁷ is an apocalyptic number.

64867 is a deficient number, since it is larger than the sum of its proper divisors (5909).

64867 is a wasteful number, since it uses less digits than its factorization.

64867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908.

The product of its digits is 8064, while the sum is 31.

The square root of 64867 is about 254.6900076564. The cubic root of 64867 is about 40.1798154488.

The spelling of 64867 in words is "sixty-four thousand, eight hundred sixty-seven".