66080805 has 16 divisors (see below), whose sum is σ = 120833664. Its totient is φ = 30208320.

The previous prime is 66080797. The next prime is 66080813. The reversal of 66080805 is 50808066.

It is an interprime number because it is at equal distance from previous prime (66080797) and next prime (66080813).

It is not a de Polignac number, because 66080805 - 2³ = 66080797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314566 + ... + 314775.

It is an arithmetic number, because the mean of its divisors is an integer number (7552104).

Almost surely, 2^66080805 is an apocalyptic number.

It is an amenable number.

66080805 is a deficient number, since it is larger than the sum of its proper divisors (54752859).

66080805 is a wasteful number, since it uses less digits than its factorization.

66080805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629356.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 66080805 is about 8129.0100873354. The cubic root of 66080805 is about 404.2888602554.

The spelling of 66080805 in words is "sixty-six million, eighty thousand, eight hundred five".