660607 has 2 divisors, whose sum is σ = 660608. Its totient is φ = 660606.

The previous prime is 660601. The next prime is 660617. The reversal of 660607 is 706066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660607 - 2³ = 660599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660601) 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, 330303 + 330304.

It is an arithmetic number, because the mean of its divisors is an integer number (330304).

2⁶⁶⁰⁶⁰⁷ is an apocalyptic number.

660607 is a deficient number, since it is larger than the sum of its proper divisors (1).

660607 is an equidigital number, since it uses as much as digits as its factorization.

660607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 660607 is about 812.7773372825. Note that the first 3 decimals coincide. The cubic root of 660607 is about 87.0925601410.

The spelling of 660607 in words is "six hundred sixty thousand, six hundred seven".