66535234 has 4 divisors (see below), whose sum is σ = 99802854. Its totient is φ = 33267616.

The previous prime is 66535223. The next prime is 66535237. The reversal of 66535234 is 43253566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43253566 = 2 ⋅21626783.

It can be written as a sum of positive squares in only one way, i.e., 60109009 + 6426225 = 7753^2 + 2535^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66535234.

It is not an unprimeable number, because it can be changed into a prime (66535237) 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 as a sum of consecutive naturals, namely, 16633807 + ... + 16633810.

Almost surely, 2^66535234 is an apocalyptic number.

66535234 is a deficient number, since it is larger than the sum of its proper divisors (33267620).

66535234 is a wasteful number, since it uses less digits than its factorization.

66535234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33267619.

The product of its digits is 64800, while the sum is 34.

The square root of 66535234 is about 8156.9132642195. The cubic root of 66535234 is about 405.2134910582.

The spelling of 66535234 in words is "sixty-six million, five hundred thirty-five thousand, two hundred thirty-four".