66364375 has 60 divisors (see below), whose sum is σ = 105772392. Its totient is φ = 41160000.

The previous prime is 66364367. The next prime is 66364391. The reversal of 66364375 is 57346366.

It is not a de Polignac number, because 66364375 - 2³ = 66364367 is a prime.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 336777 + ... + 336973.

Almost surely, 2^66364375 is an apocalyptic number.

66364375 is a deficient number, since it is larger than the sum of its proper divisors (39408017).

66364375 is a wasteful number, since it uses less digits than its factorization.

66364375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 220 counting only the distinct ones).

The product of its digits is 272160, while the sum is 40.

The square root of 66364375 is about 8146.4332686152. The cubic root of 66364375 is about 404.8663380497.

Subtracting from 66364375 its reverse (57346366), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 6636 and 4375, that added together give a palindrome (11011).

The spelling of 66364375 in words is "sixty-six million, three hundred sixty-four thousand, three hundred seventy-five".