66707443 has 16 divisors (see below), whose sum is σ = 76557312. Its totient is φ = 57564000.

The previous prime is 66707441. The next prime is 66707447. The reversal of 66707443 is 34470766.

It is a cyclic number.

It is not a de Polignac number, because 66707443 - 2¹ = 66707441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66707441) 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, 16228 + ... + 19918.

It is an arithmetic number, because the mean of its divisors is an integer number (4784832).

Almost surely, 2^66707443 is an apocalyptic number.

66707443 is a deficient number, since it is larger than the sum of its proper divisors (9849869).

66707443 is a wasteful number, since it uses less digits than its factorization.

66707443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 66707443 is about 8167.4624578262. The cubic root of 66707443 is about 405.5627861544.

The spelling of 66707443 in words is "sixty-six million, seven hundred seven thousand, four hundred forty-three".