660460223 has 2 divisors, whose sum is σ = 660460224. Its totient is φ = 660460222.

The previous prime is 660460201. The next prime is 660460243. The reversal of 660460223 is 322064066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660460223 - 2¹⁰ = 660459199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660460243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330230111 + 330230112.

It is an arithmetic number, because the mean of its divisors is an integer number (330230112).

Almost surely, 2^660460223 is an apocalyptic number.

660460223 is a deficient number, since it is larger than the sum of its proper divisors (1).

660460223 is an equidigital number, since it uses as much as digits as its factorization.

660460223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 660460223 is about 25699.4206744043. The cubic root of 660460223 is about 870.8610944155.

The spelling of 660460223 in words is "six hundred sixty million, four hundred sixty thousand, two hundred twenty-three".