66242733 has 4 divisors (see below), whose sum is σ = 88323648. Its totient is φ = 44161820.

The previous prime is 66242713. The next prime is 66242741. The reversal of 66242733 is 33724266.

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 66242733 - 2⁶ = 66242669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66242694 and 66242703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66242713) 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, 11040453 + ... + 11040458.

It is an arithmetic number, because the mean of its divisors is an integer number (22080912).

Almost surely, 2^66242733 is an apocalyptic number.

It is an amenable number.

66242733 is a deficient number, since it is larger than the sum of its proper divisors (22080915).

66242733 is a wasteful number, since it uses less digits than its factorization.

66242733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22080914.

The product of its digits is 36288, while the sum is 33.

The square root of 66242733 is about 8138.9638775461. The cubic root of 66242733 is about 404.6188213572.

Adding to 66242733 its reverse (33724266), we get a palindrome (99966999).

The spelling of 66242733 in words is "sixty-six million, two hundred forty-two thousand, seven hundred thirty-three".