66255145 has 16 divisors (see below), whose sum is σ = 86905728. Its totient is φ = 48090240.

The previous prime is 66255143. The next prime is 66255151. The reversal of 66255145 is 54155266.

It is not a de Polignac number, because 66255145 - 2¹ = 66255143 is a prime.

It is a Duffinian number.

Its product of digits (36000) is a multiple of the sum of its prime divisors (2400).

It is a self number, because there is not a number n which added to its sum of digits gives 66255145.

It is not an unprimeable number, because it can be changed into a prime (66255143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39157 + ... + 40813.

It is an arithmetic number, because the mean of its divisors is an integer number (5431608).

Almost surely, 2^66255145 is an apocalyptic number.

It is an amenable number.

66255145 is a deficient number, since it is larger than the sum of its proper divisors (20650583).

66255145 is a wasteful number, since it uses less digits than its factorization.

66255145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its digits is 36000, while the sum is 34.

The square root of 66255145 is about 8139.7263467515. The cubic root of 66255145 is about 404.6440911236.

It can be divided in two parts, 662551 and 45, that added together give a square (662596 = 814²).

The spelling of 66255145 in words is "sixty-six million, two hundred fifty-five thousand, one hundred forty-five".