660252011 has 2 divisors, whose sum is σ = 660252012. Its totient is φ = 660252010.

The previous prime is 660251959. The next prime is 660252023. The reversal of 660252011 is 110252066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660252011 - 2⁶ = 660251947 is a prime.

It is not a weakly prime, because it can be changed into another prime (660252031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330126005 + 330126006.

It is an arithmetic number, because the mean of its divisors is an integer number (330126006).

Almost surely, 2^660252011 is an apocalyptic number.

660252011 is a deficient number, since it is larger than the sum of its proper divisors (1).

660252011 is an equidigital number, since it uses as much as digits as its factorization.

660252011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 660252011 is about 25695.3694466532. The cubic root of 660252011 is about 870.7695709690.

Subtracting from 660252011 its reverse (110252066), we obtain a palindrome (549999945).

The spelling of 660252011 in words is "six hundred sixty million, two hundred fifty-two thousand, eleven".