66804083707 has 4 divisors (see below), whose sum is σ = 66975816960. Its totient is φ = 66632350456.

The previous prime is 66804083699. The next prime is 66804083737. The reversal of 66804083707 is 70738040866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66804083707 - 2³ = 66804083699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66804083737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85866043 + ... + 85866820.

It is an arithmetic number, because the mean of its divisors is an integer number (16743954240).

Almost surely, 2^66804083707 is an apocalyptic number.

66804083707 is a deficient number, since it is larger than the sum of its proper divisors (171733253).

66804083707 is a wasteful number, since it uses less digits than its factorization.

66804083707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171733252.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 66804083707 in words is "sixty-six billion, eight hundred four million, eighty-three thousand, seven hundred seven".