660288451 has 2 divisors, whose sum is σ = 660288452. Its totient is φ = 660288450.

The previous prime is 660288403. The next prime is 660288487. The reversal of 660288451 is 154882066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660288451 - 2¹³ = 660280259 is a prime.

It is not a weakly prime, because it can be changed into another prime (660288751) 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, 330144225 + 330144226.

It is an arithmetic number, because the mean of its divisors is an integer number (330144226).

Almost surely, 2^660288451 is an apocalyptic number.

660288451 is a deficient number, since it is larger than the sum of its proper divisors (1).

660288451 is an equidigital number, since it uses as much as digits as its factorization.

660288451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 660288451 is about 25696.0785140457. The cubic root of 660288451 is about 870.7855902358.

The spelling of 660288451 in words is "six hundred sixty million, two hundred eighty-eight thousand, four hundred fifty-one".