64693 has 2 divisors, whose sum is σ = 64694. Its totient is φ = 64692.

The previous prime is 64679. The next prime is 64709. The reversal of 64693 is 39646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54289 + 10404 = 233^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 64693 - 2⁵ = 64661 is a prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64613) 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 as a sum of consecutive naturals, namely, 32346 + 32347.

It is an arithmetic number, because the mean of its divisors is an integer number (32347).

2⁶⁴⁶⁹³ is an apocalyptic number.

It is an amenable number.

64693 is a deficient number, since it is larger than the sum of its proper divisors (1).

64693 is an equidigital number, since it uses as much as digits as its factorization.

64693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 64693 is about 254.3481865475. The cubic root of 64693 is about 40.1438570088.

It can be divided in two parts, 64 and 693, that added together give a palindrome (757).

The spelling of 64693 in words is "sixty-four thousand, six hundred ninety-three".