66752338 has 4 divisors (see below), whose sum is σ = 100128510. Its totient is φ = 33376168.

The previous prime is 66752333. The next prime is 66752351. The reversal of 66752338 is 83325766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53187849 + 13564489 = 7293^2 + 3683^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 66752338.

It is not an unprimeable number, because it can be changed into a prime (66752333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16688083 + ... + 16688086.

Almost surely, 2^66752338 is an apocalyptic number.

66752338 is a deficient number, since it is larger than the sum of its proper divisors (33376172).

66752338 is a wasteful number, since it uses less digits than its factorization.

66752338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376171.

The product of its digits is 181440, while the sum is 40.

The square root of 66752338 is about 8170.2104012075. The cubic root of 66752338 is about 405.6537488082.

The spelling of 66752338 in words is "sixty-six million, seven hundred fifty-two thousand, three hundred thirty-eight".