66893146 has 8 divisors (see below), whose sum is σ = 100377684. Its totient is φ = 33433920.

The previous prime is 66893143. The next prime is 66893153. The reversal of 66893146 is 64139866.

It can be written as a sum of positive squares in 2 ways, for example, as 63377521 + 3515625 = 7961^2 + 1875^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66893143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076 + ... + 11968.

Almost surely, 2^66893146 is an apocalyptic number.

66893146 is a deficient number, since it is larger than the sum of its proper divisors (33484538).

66893146 is a wasteful number, since it uses less digits than its factorization.

66893146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656.

The product of its digits is 186624, while the sum is 43.

The square root of 66893146 is about 8178.8230204596. The cubic root of 66893146 is about 405.9387784122.

The spelling of 66893146 in words is "sixty-six million, eight hundred ninety-three thousand, one hundred forty-six".