660703 has 4 divisors (see below), whose sum is σ = 682048. Its totient is φ = 639360.

The previous prime is 660683. The next prime is 660719. The reversal of 660703 is 307066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307066 = 2 ⋅153533.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660703 is a prime.

It is a Duffinian number.

660703 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660733) 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 in 3 ways as a sum of consecutive naturals, for example, 10626 + ... + 10687.

It is an arithmetic number, because the mean of its divisors is an integer number (170512).

2⁶⁶⁰⁷⁰³ is an apocalyptic number.

660703 is a deficient number, since it is larger than the sum of its proper divisors (21345).

660703 is a wasteful number, since it uses less digits than its factorization.

660703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21344.

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

The square root of 660703 is about 812.8363919018. The cubic root of 660703 is about 87.0967787262.

Adding to 660703 its reverse (307066), we get a palindrome (967769).

The spelling of 660703 in words is "six hundred sixty thousand, seven hundred three".