64081 has 2 divisors, whose sum is σ = 64082. Its totient is φ = 64080.

The previous prime is 64067. The next prime is 64091. The reversal of 64081 is 18046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50625 + 13456 = 225^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 64081 - 2¹³ = 55889 is a prime.

It is a super-2 number, since 2×64081² = 8212749122, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (64091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32040 + 32041.

It is an arithmetic number, because the mean of its divisors is an integer number (32041).

2⁶⁴⁰⁸¹ is an apocalyptic number.

It is an amenable number.

64081 is a deficient number, since it is larger than the sum of its proper divisors (1).

64081 is an equidigital number, since it uses as much as digits as its factorization.

64081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 64081 is about 253.1422524985. The cubic root of 64081 is about 40.0168678859.

The spelling of 64081 in words is "sixty-four thousand, eighty-one".