660524047 has 2 divisors, whose sum is σ = 660524048. Its totient is φ = 660524046.

The previous prime is 660524023. The next prime is 660524083. The reversal of 660524047 is 740425066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660524047 - 2¹⁹ = 659999759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660524017) 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, 330262023 + 330262024.

It is an arithmetic number, because the mean of its divisors is an integer number (330262024).

Almost surely, 2^660524047 is an apocalyptic number.

660524047 is a deficient number, since it is larger than the sum of its proper divisors (1).

660524047 is an equidigital number, since it uses as much as digits as its factorization.

660524047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 660524047 is about 25700.6623844601. The cubic root of 660524047 is about 870.8891455866.

The spelling of 660524047 in words is "six hundred sixty million, five hundred twenty-four thousand, forty-seven".