66884307 has 32 divisors (see below), whose sum is σ = 110449152. Its totient is φ = 35126784.

The previous prime is 66884269. The next prime is 66884327. The reversal of 66884307 is 70348866.

It is not a de Polignac number, because 66884307 - 2¹⁰ = 66883283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66884327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13173 + ... + 17529.

It is an arithmetic number, because the mean of its divisors is an integer number (3451536).

Almost surely, 2^66884307 is an apocalyptic number.

66884307 is a deficient number, since it is larger than the sum of its proper divisors (43564845).

66884307 is a wasteful number, since it uses less digits than its factorization.

66884307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 66884307 is about 8178.2826436850. The cubic root of 66884307 is about 405.9208979011.

The spelling of 66884307 in words is "sixty-six million, eight hundred eighty-four thousand, three hundred seven".