66122806 has 8 divisors (see below), whose sum is σ = 99309240. Its totient is φ = 33019728.

The previous prime is 66122803. The next prime is 66122821. The reversal of 66122806 is 60822166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66122803) 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, 18816 + ... + 22051.

It is an arithmetic number, because the mean of its divisors is an integer number (12413655).

Almost surely, 2^66122806 is an apocalyptic number.

66122806 is a deficient number, since it is larger than the sum of its proper divisors (33186434).

66122806 is a wasteful number, since it uses less digits than its factorization.

66122806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41678.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 66122806 is about 8131.5930788499. The cubic root of 66122806 is about 404.3744975297.

The spelling of 66122806 in words is "sixty-six million, one hundred twenty-two thousand, eight hundred six".