66255773 has 8 divisors (see below), whose sum is σ = 68935680. Its totient is φ = 63609840.

The previous prime is 66255769. The next prime is 66255779. The reversal of 66255773 is 37755266.

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

It is a cyclic number.

It is not a de Polignac number, because 66255773 - 2² = 66255769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66255773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66255779) 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, 4478 + ... + 12351.

It is an arithmetic number, because the mean of its divisors is an integer number (8616960).

Almost surely, 2^66255773 is an apocalyptic number.

It is an amenable number.

66255773 is a deficient number, since it is larger than the sum of its proper divisors (2679907).

66255773 is a wasteful number, since it uses less digits than its factorization.

66255773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16987.

The product of its digits is 264600, while the sum is 41.

The square root of 66255773 is about 8139.7649228955. The cubic root of 66255773 is about 404.6453695938.

The spelling of 66255773 in words is "sixty-six million, two hundred fifty-five thousand, seven hundred seventy-three".