66122733 has 4 divisors (see below), whose sum is σ = 88163648. Its totient is φ = 44081820.

The previous prime is 66122729. The next prime is 66122803. The reversal of 66122733 is 33722166.

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 not a de Polignac number, because 66122733 - 2² = 66122729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66122733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66122533) 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, 11020453 + ... + 11020458.

It is an arithmetic number, because the mean of its divisors is an integer number (22040912).

Almost surely, 2^66122733 is an apocalyptic number.

It is an amenable number.

66122733 is a deficient number, since it is larger than the sum of its proper divisors (22040915).

66122733 is a wasteful number, since it uses less digits than its factorization.

66122733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22040914.

The product of its digits is 9072, while the sum is 30.

The square root of 66122733 is about 8131.5885901833. The cubic root of 66122733 is about 404.3743487190.

Adding to 66122733 its reverse (33722166), we get a palindrome (99844899).

The spelling of 66122733 in words is "sixty-six million, one hundred twenty-two thousand, seven hundred thirty-three".