66822085 has 8 divisors (see below), whose sum is σ = 87476256. Its totient is φ = 48597840.

The previous prime is 66822073. The next prime is 66822089. The reversal of 66822085 is 58022866.

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

It is not a de Polignac number, because 66822085 - 2²⁵ = 33267653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66822089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607419 + ... + 607528.

It is an arithmetic number, because the mean of its divisors is an integer number (10934532).

Almost surely, 2^66822085 is an apocalyptic number.

It is an amenable number.

66822085 is a deficient number, since it is larger than the sum of its proper divisors (20654171).

66822085 is a wasteful number, since it uses less digits than its factorization.

66822085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214963.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 66822085 is about 8174.4776591535. The cubic root of 66822085 is about 405.7949837294.

The spelling of 66822085 in words is "sixty-six million, eight hundred twenty-two thousand, eighty-five".