4002206605 has 4 divisors (see below), whose sum is σ = 4802647932. Its totient is φ = 3201765280.

The previous prime is 4002206587. The next prime is 4002206629. The reversal of 4002206605 is 5066022004.

4002206605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2314475881 + 1687730724 = 48109^2 + 41082^2 .

It is not a de Polignac number, because 4002206605 - 2⁵ = 4002206573 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 4002206605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400220656 + ... + 400220665.

It is an arithmetic number, because the mean of its divisors is an integer number (1200661983).

Almost surely, 2^4002206605 is an apocalyptic number.

It is an amenable number.

4002206605 is a deficient number, since it is larger than the sum of its proper divisors (800441327).

4002206605 is an equidigital number, since it uses as much as digits as its factorization.

4002206605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800441326.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 4002206605 is about 63262.9955424180. The cubic root of 4002206605 is about 1587.6928955677.

Adding to 4002206605 its reverse (5066022004), we get a palindrome (9068228609).

The spelling of 4002206605 in words is "four billion, two million, two hundred six thousand, six hundred five".