66329 has 4 divisors (see below), whose sum is σ = 69840. Its totient is φ = 62820.

The previous prime is 66301. The next prime is 66337. The reversal of 66329 is 92366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92366 = 2 ⋅46183.

It is a cyclic number.

It is not a de Polignac number, because 66329 - 2¹² = 62233 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 66298 and 66307.

It is not an unprimeable number, because it can be changed into a prime (66359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727 + ... + 1764.

It is an arithmetic number, because the mean of its divisors is an integer number (17460).

2⁶⁶³²⁹ is an apocalyptic number.

It is an amenable number.

66329 is a deficient number, since it is larger than the sum of its proper divisors (3511).

66329 is a wasteful number, since it uses less digits than its factorization.

66329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510.

The product of its digits is 1944, while the sum is 26.

The square root of 66329 is about 257.5441709688. The cubic root of 66329 is about 40.4794388342.

The spelling of 66329 in words is "sixty-six thousand, three hundred twenty-nine".