4001706655 has 16 divisors (see below), whose sum is σ = 4884347520. Its totient is φ = 3146707872.

The previous prime is 4001706581. The next prime is 4001706659. The reversal of 4001706655 is 5566071004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4001706655 - 2¹¹ = 4001704607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4001706655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001706659) 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, 143656 + ... + 169234.

It is an arithmetic number, because the mean of its divisors is an integer number (305271720).

Almost surely, 2^4001706655 is an apocalyptic number.

4001706655 is a deficient number, since it is larger than the sum of its proper divisors (882640865).

4001706655 is a wasteful number, since it uses less digits than its factorization.

4001706655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26118.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 4001706655 is about 63259.0440569568. The cubic root of 4001706655 is about 1587.6267820295.

Adding to 4001706655 its reverse (5566071004), we get a palindrome (9567777659).

The spelling of 4001706655 in words is "four billion, one million, seven hundred six thousand, six hundred fifty-five".