66582255 has 32 divisors (see below), whose sum is σ = 109396224. Its totient is φ = 34569216.

The previous prime is 66582253. The next prime is 66582311. The reversal of 66582255 is 55228566.

It is a happy number.

It is not a de Polignac number, because 66582255 - 2¹ = 66582253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66582253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97144 + ... + 97826.

It is an arithmetic number, because the mean of its divisors is an integer number (3418632).

Almost surely, 2^66582255 is an apocalyptic number.

66582255 is a deficient number, since it is larger than the sum of its proper divisors (42813969).

66582255 is a wasteful number, since it uses less digits than its factorization.

66582255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855.

The product of its digits is 144000, while the sum is 39.

The square root of 66582255 is about 8159.7950341905. The cubic root of 66582255 is about 405.3089244887.

The spelling of 66582255 in words is "sixty-six million, five hundred eighty-two thousand, two hundred fifty-five".