66662255 has 32 divisors (see below), whose sum is σ = 90782208. Its totient is φ = 46569600.

The previous prime is 66662237. The next prime is 66662261. The reversal of 66662255 is 55226666.

It is not a de Polignac number, because 66662255 - 2⁶ = 66662191 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 167717 + ... + 168113.

It is an arithmetic number, because the mean of its divisors is an integer number (2836944).

Almost surely, 2^66662255 is an apocalyptic number.

66662255 is a deficient number, since it is larger than the sum of its proper divisors (24119953).

66662255 is a wasteful number, since it uses less digits than its factorization.

66662255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its digits is 129600, while the sum is 38.

The square root of 66662255 is about 8164.6956465015. The cubic root of 66662255 is about 405.4711886250.

The spelling of 66662255 in words is "sixty-six million, six hundred sixty-two thousand, two hundred fifty-five".