66033145 has 8 divisors (see below), whose sum is σ = 81972360. Its totient is φ = 51004800.

The previous prime is 66033133. The next prime is 66033157. The reversal of 66033145 is 54133066.

66033145 = T₃₁₉ + T₃₂₀ + ... + T₇₅₃.

It is an interprime number because it is at equal distance from previous prime (66033133) and next prime (66033157).

It can be written as a sum of positive squares in 4 ways, for example, as 147456 + 65885689 = 384^2 + 8117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66033145 - 2⁹ = 66032633 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 227556 + ... + 227845.

It is an arithmetic number, because the mean of its divisors is an integer number (10246545).

Almost surely, 2^66033145 is an apocalyptic number.

It is an amenable number.

66033145 is a deficient number, since it is larger than the sum of its proper divisors (15939215).

66033145 is a wasteful number, since it uses less digits than its factorization.

66033145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455435.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 66033145 is about 8126.0780823224. The cubic root of 66033145 is about 404.1916406906.

The spelling of 66033145 in words is "sixty-six million, thirty-three thousand, one hundred forty-five".