66208255 has 8 divisors (see below), whose sum is σ = 83631600. Its totient is φ = 50178816.

The previous prime is 66208253. The next prime is 66208267. The reversal of 66208255 is 55280266.

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 66208255 - 2¹ = 66208253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66208255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66208253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 348370 + ... + 348559.

It is an arithmetic number, because the mean of its divisors is an integer number (10453950).

Almost surely, 2^66208255 is an apocalyptic number.

66208255 is a deficient number, since it is larger than the sum of its proper divisors (17423345).

66208255 is a wasteful number, since it uses less digits than its factorization.

66208255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696953.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 66208255 is about 8136.8455189957. The cubic root of 66208255 is about 404.5486105426.

The spelling of 66208255 in words is "sixty-six million, two hundred eight thousand, two hundred fifty-five".