66716333 has 4 divisors (see below), whose sum is σ = 67116000. Its totient is φ = 66316668.

The previous prime is 66716329. The next prime is 66716413. The reversal of 66716333 is 33361766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66716333 - 2² = 66716329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66716293 and 66716302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66716323) 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, 199583 + ... + 199916.

It is an arithmetic number, because the mean of its divisors is an integer number (16779000).

Almost surely, 2^66716333 is an apocalyptic number.

It is an amenable number.

66716333 is a deficient number, since it is larger than the sum of its proper divisors (399667).

66716333 is a wasteful number, since it uses less digits than its factorization.

66716333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399666.

The product of its digits is 40824, while the sum is 35.

The square root of 66716333 is about 8168.0066723773. The cubic root of 66716333 is about 405.5808016004.

The spelling of 66716333 in words is "sixty-six million, seven hundred sixteen thousand, three hundred thirty-three".