66703 has 8 divisors (see below), whose sum is σ = 82208. Its totient is φ = 52704.

The previous prime is 66701. The next prime is 66713. The reversal of 66703 is 30766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66703 - 2¹ = 66701 is a prime.

66703 is a lucky number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 457.

It is an arithmetic number, because the mean of its divisors is an integer number (10276).

2⁶⁶⁷⁰³ is an apocalyptic number.

66703 is a deficient number, since it is larger than the sum of its proper divisors (15505).

66703 is a wasteful number, since it uses less digits than its factorization.

66703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 66703 is about 258.2692393608. The cubic root of 66703 is about 40.5553781884. Note that the first 3 decimals are identical.

Subtracting from 66703 its reverse (30766), we obtain a cube (35937 = 33³).

The spelling of 66703 in words is "sixty-six thousand, seven hundred three".