4636656649 has 9 divisors (see below), whose sum is σ = 4678220757. Its totient is φ = 4595460384.

The previous prime is 4636656617. The next prime is 4636656671. The reversal of 4636656649 is 9466566364.

The square root of 4636656649 is 68093.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3404025 + 4633252624 = 1845^2 + 68068^2 .

It is not a de Polignac number, because 4636656649 - 2⁵ = 4636656617 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 4636656649.

It is not an unprimeable number, because it can be changed into a prime (4636656679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10145629 + ... + 10146085.

Almost surely, 2^4636656649 is an apocalyptic number.

4636656649 is the 68093-rd square number.

4636656649 is the 34047-th centered octagonal number.

It is an amenable number.

4636656649 is a deficient number, since it is larger than the sum of its proper divisors (41564108).

4636656649 is an frugal number, since it uses more digits than its factorization.

4636656649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 606 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 55.

The cubic root of 4636656649 is about 1667.5094827159.

The spelling of 4636656649 in words is "four billion, six hundred thirty-six million, six hundred fifty-six thousand, six hundred forty-nine".