6660346523 has 2 divisors, whose sum is σ = 6660346524. Its totient is φ = 6660346522.

The previous prime is 6660346499. The next prime is 6660346541. The reversal of 6660346523 is 3256430666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6660346523 - 2¹⁰ = 6660345499 is a prime.

It is not a weakly prime, because it can be changed into another prime (6660346723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330173261 + 3330173262.

It is an arithmetic number, because the mean of its divisors is an integer number (3330173262).

Almost surely, 2^6660346523 is an apocalyptic number.

6660346523 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660346523 is an equidigital number, since it uses as much as digits as its factorization.

6660346523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 41.

The square root of 6660346523 is about 81610.9460979347. The cubic root of 6660346523 is about 1881.4771214285.

The spelling of 6660346523 in words is "six billion, six hundred sixty million, three hundred forty-six thousand, five hundred twenty-three".