64771 has 8 divisors (see below), whose sum is σ = 78080. Its totient is φ = 52488.

The previous prime is 64763. The next prime is 64781. The reversal of 64771 is 17746.

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

It is a 8-Lehmer number, since φ(64771) divides (64771-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 64771 - 2³ = 64763 is a prime.

It is the 255-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64781) by changing a digit.

It is a nontrivial repunit in base 254.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111 + ... + 376.

It is an arithmetic number, because the mean of its divisors is an integer number (9760).

2⁶⁴⁷⁷¹ is an apocalyptic number.

64771 is a deficient number, since it is larger than the sum of its proper divisors (13309).

64771 is a wasteful number, since it uses less digits than its factorization.

64771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513.

The product of its digits is 1176, while the sum is 25.

The square root of 64771 is about 254.5014734731. The cubic root of 64771 is about 40.1599842727.

Subtracting from 64771 its sum of digits (25), we obtain a palindrome (64746).

The spelling of 64771 in words is "sixty-four thousand, seven hundred seventy-one".