64471 has 4 divisors (see below), whose sum is σ = 70344. Its totient is φ = 58600.

The previous prime is 64453. The next prime is 64483. The reversal of 64471 is 17446.

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

It is a cyclic number.

It is not a de Polignac number, because 64471 - 2⁵ = 64439 is a prime.

It is a super-3 number, since 3×64471³ = 803923037877333, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2920 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (17586).

2⁶⁴⁴⁷¹ is an apocalyptic number.

64471 is a deficient number, since it is larger than the sum of its proper divisors (5873).

64471 is a wasteful number, since it uses less digits than its factorization.

64471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872.

The product of its digits is 672, while the sum is 22.

The square root of 64471 is about 253.9114018708. The cubic root of 64471 is about 40.0978852665.

It can be divided in two parts, 64 and 471, that added together give a palindrome (535).

The spelling of 64471 in words is "sixty-four thousand, four hundred seventy-one".