4067599666 has 16 divisors (see below), whose sum is σ = 6580706328. Its totient is φ = 1874505600.

The previous prime is 4067599661. The next prime is 4067599691. The reversal of 4067599666 is 6669957604.

4067599666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2532605625 + 1534994041 = 50325^2 + 39179^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4067599666.

It is not an unprimeable number, because it can be changed into a prime (4067599661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101155 + ... + 135526.

Almost surely, 2^4067599666 is an apocalyptic number.

4067599666 is a deficient number, since it is larger than the sum of its proper divisors (2513106662).

4067599666 is a wasteful number, since it uses less digits than its factorization.

4067599666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237357.

The product of its (nonzero) digits is 14696640, while the sum is 58.

The square root of 4067599666 is about 63777.7364446246. The cubic root of 4067599666 is about 1596.2934599498.

The spelling of 4067599666 in words is "four billion, sixty-seven million, five hundred ninety-nine thousand, six hundred sixty-six".