66116806 has 16 divisors (see below), whose sum is σ = 115036416. Its totient is φ = 27912456.

The previous prime is 66116797. The next prime is 66116819. The reversal of 66116806 is 60861166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34306 + ... + 36181.

It is an arithmetic number, because the mean of its divisors is an integer number (7189776).

Almost surely, 2^66116806 is an apocalyptic number.

66116806 is a deficient number, since it is larger than the sum of its proper divisors (48919610).

66116806 is a wasteful number, since it uses less digits than its factorization.

66116806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70563.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 66116806 is about 8131.2241390826. The cubic root of 66116806 is about 404.3622661453.

The spelling of 66116806 in words is "sixty-six million, one hundred sixteen thousand, eight hundred six".