66845234 has 8 divisors (see below), whose sum is σ = 101260908. Its totient is φ = 33091600.

The previous prime is 66845227. The next prime is 66845237. The reversal of 66845234 is 43254866.

It can be written as a sum of positive squares in 2 ways, for example, as 61669609 + 5175625 = 7853^2 + 2275^2 .

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 (66845237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165257 + ... + 165660.

Almost surely, 2^66845234 is an apocalyptic number.

66845234 is a deficient number, since it is larger than the sum of its proper divisors (34415674).

66845234 is a wasteful number, since it uses less digits than its factorization.

66845234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331020.

The product of its digits is 138240, while the sum is 38.

The square root of 66845234 is about 8175.8934679948. The cubic root of 66845234 is about 405.8418378173.

The spelling of 66845234 in words is "sixty-six million, eight hundred forty-five thousand, two hundred thirty-four".