660260063 has 2 divisors, whose sum is σ = 660260064. Its totient is φ = 660260062.

The previous prime is 660260053. The next prime is 660260071. The reversal of 660260063 is 360062066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660260063 - 2¹⁶ = 660194527 is a prime.

It is a Sophie Germain 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 (660260053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330130031 + 330130032.

It is an arithmetic number, because the mean of its divisors is an integer number (330130032).

Almost surely, 2^660260063 is an apocalyptic number.

660260063 is a deficient number, since it is larger than the sum of its proper divisors (1).

660260063 is an equidigital number, since it uses as much as digits as its factorization.

660260063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 660260063 is about 25695.5261281025. The cubic root of 660260063 is about 870.7731107325.

The spelling of 660260063 in words is "six hundred sixty million, two hundred sixty thousand, sixty-three".