66373 has 2 divisors, whose sum is σ = 66374. Its totient is φ = 66372.

The previous prime is 66361. The next prime is 66377. The reversal of 66373 is 37366.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 324 = 257^2 + 18^2 .

66373 is a truncatable prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33186 + 33187.

It is an arithmetic number, because the mean of its divisors is an integer number (33187).

2⁶⁶³⁷³ is an apocalyptic number.

It is an amenable number.

66373 is a deficient number, since it is larger than the sum of its proper divisors (1).

66373 is an equidigital number, since it uses as much as digits as its factorization.

66373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 25.

The square root of 66373 is about 257.6295790471. The cubic root of 66373 is about 40.4883876681.

The spelling of 66373 in words is "sixty-six thousand, three hundred seventy-three".