7364561666 has 48 divisors (see below), whose sum is σ = 13954274880. Its totient is φ = 2853338400.

The previous prime is 7364561651. The next prime is 7364561669. The reversal of 7364561666 is 6661654637.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7364561669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294605 + ... + 318623.

It is an arithmetic number, because the mean of its divisors is an integer number (290714060).

Almost surely, 2^7364561666 is an apocalyptic number.

7364561666 is a deficient number, since it is larger than the sum of its proper divisors (6589713214).

7364561666 is a wasteful number, since it uses less digits than its factorization.

7364561666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24231 (or 24220 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 50.

The square root of 7364561666 is about 85817.0243366664. The cubic root of 7364561666 is about 1945.5794376824.

The spelling of 7364561666 in words is "seven billion, three hundred sixty-four million, five hundred sixty-one thousand, six hundred sixty-six".