6660375563 has 2 divisors, whose sum is σ = 6660375564. Its totient is φ = 6660375562.

The previous prime is 6660375541. The next prime is 6660375629. The reversal of 6660375563 is 3655730666.

6660375563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6660375563 - 2¹² = 6660371467 is a prime.

It is not a weakly prime, because it can be changed into another prime (6660375523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330187781 + 3330187782.

It is an arithmetic number, because the mean of its divisors is an integer number (3330187782).

Almost surely, 2^6660375563 is an apocalyptic number.

6660375563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660375563 is an equidigital number, since it uses as much as digits as its factorization.

6660375563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 47.

The square root of 6660375563 is about 81611.1240150508. The cubic root of 6660375563 is about 1881.4798559216.

The spelling of 6660375563 in words is "six billion, six hundred sixty million, three hundred seventy-five thousand, five hundred sixty-three".