66795806 has 64 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 24864000.

The previous prime is 66795797. The next prime is 66795821. The reversal of 66795806 is 60859766.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 448220 + ... + 448368.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^66795806 is an apocalyptic number.

66795806 is a deficient number, since it is larger than the sum of its proper divisors (63840994).

66795806 is a wasteful number, since it uses less digits than its factorization.

66795806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 66795806 is about 8172.8701200986. The cubic root of 66795806 is about 405.7417813358.

The spelling of 66795806 in words is "sixty-six million, seven hundred ninety-five thousand, eight hundred six".