66255285 has 16 divisors (see below), whose sum is σ = 109664640. Its totient is φ = 34117440.

The previous prime is 66255257. The next prime is 66255317. The reversal of 66255285 is 58255266.

It is a happy number.

It is not a de Polignac number, because 66255285 - 2⁵ = 66255253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75721 + ... + 76590.

It is an arithmetic number, because the mean of its divisors is an integer number (6854040).

Almost surely, 2^66255285 is an apocalyptic number.

It is an amenable number.

66255285 is a deficient number, since it is larger than the sum of its proper divisors (43409355).

66255285 is a wasteful number, since it uses less digits than its factorization.

66255285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152348.

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

The square root of 66255285 is about 8139.7349465446. The cubic root of 66255285 is about 404.6443761336.

The spelling of 66255285 in words is "sixty-six million, two hundred fifty-five thousand, two hundred eighty-five".