66611343 has 16 divisors (see below), whose sum is σ = 93817856. Its totient is φ = 41973120.

The previous prime is 66611341. The next prime is 66611351. The reversal of 66611343 is 34311666.

It is not a de Polignac number, because 66611343 - 2¹ = 66611341 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 66611343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66611341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4330 + ... + 12327.

It is an arithmetic number, because the mean of its divisors is an integer number (5863616).

Almost surely, 2^66611343 is an apocalyptic number.

66611343 is a deficient number, since it is larger than the sum of its proper divisors (27206513).

66611343 is a wasteful number, since it uses less digits than its factorization.

66611343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16734.

The product of its digits is 7776, while the sum is 30.

The square root of 66611343 is about 8161.5772372747. The cubic root of 66611343 is about 405.3679387589.

The spelling of 66611343 in words is "sixty-six million, six hundred eleven thousand, three hundred forty-three".