660047 has 2 divisors, whose sum is σ = 660048. Its totient is φ = 660046.

The previous prime is 660029. The next prime is 660053. The reversal of 660047 is 740066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660047 - 2⁶ = 659983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330023 + 330024.

It is an arithmetic number, because the mean of its divisors is an integer number (330024).

2⁶⁶⁰⁰⁴⁷ is an apocalyptic number.

660047 is a deficient number, since it is larger than the sum of its proper divisors (1).

660047 is an equidigital number, since it uses as much as digits as its factorization.

660047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 660047 is about 812.4327664490. The cubic root of 660047 is about 87.0679435779.

The spelling of 660047 in words is "six hundred sixty thousand, forty-seven".