66033146 has 4 divisors (see below), whose sum is σ = 99049722. Its totient is φ = 33016572.

The previous prime is 66033133. The next prime is 66033157. The reversal of 66033146 is 64133066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64133066 = 2 ⋅32066533.

It can be written as a sum of positive squares in only one way, i.e., 64240225 + 1792921 = 8015^2 + 1339^2 .

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 as a sum of consecutive naturals, namely, 16508285 + ... + 16508288.

Almost surely, 2^66033146 is an apocalyptic number.

66033146 is a deficient number, since it is larger than the sum of its proper divisors (33016576).

66033146 is a wasteful number, since it uses less digits than its factorization.

66033146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33016575.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 66033146 is about 8126.0781438527. The cubic root of 66033146 is about 404.1916427309.

The spelling of 66033146 in words is "sixty-six million, thirty-three thousand, one hundred forty-six".