6663534273 has 12 divisors (see below), whose sum is σ = 10500114768. Its totient is φ = 4038505560.

The previous prime is 6663534271. The next prime is 6663534349. The reversal of 6663534273 is 3724353666.

It is not a de Polignac number, because 6663534273 - 2¹ = 6663534271 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6663534271) 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 in 11 ways as a sum of consecutive naturals, for example, 33654115 + ... + 33654312.

It is an arithmetic number, because the mean of its divisors is an integer number (875009564).

Almost surely, 2^6663534273 is an apocalyptic number.

It is an amenable number.

6663534273 is a deficient number, since it is larger than the sum of its proper divisors (3836580495).

6663534273 is a wasteful number, since it uses less digits than its factorization.

6663534273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67308444 (or 67308441 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 45.

The square root of 6663534273 is about 81630.4739236518. The cubic root of 6663534273 is about 1881.7772420536. Note that the first 3 decimals are identical.

The spelling of 6663534273 in words is "six billion, six hundred sixty-three million, five hundred thirty-four thousand, two hundred seventy-three".