66322707 has 16 divisors (see below), whose sum is σ = 98824320. Its totient is φ = 39214400.

The previous prime is 66322703. The next prime is 66322709. The reversal of 66322707 is 70722366.

It is a cyclic number.

It is not a de Polignac number, because 66322707 - 2² = 66322703 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (66322703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23157 + ... + 25862.

It is an arithmetic number, because the mean of its divisors is an integer number (6176520).

Almost surely, 2^66322707 is an apocalyptic number.

66322707 is a deficient number, since it is larger than the sum of its proper divisors (32501613).

66322707 is a wasteful number, since it uses less digits than its factorization.

66322707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49074.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 66322707 is about 8143.8754288115. The cubic root of 66322707 is about 404.7815862406.

It can be divided in two parts, 6632 and 2707, that added together give a palindrome (9339).

The spelling of 66322707 in words is "sixty-six million, three hundred twenty-two thousand, seven hundred seven".