4356668641 has 8 divisors (see below), whose sum is σ = 4696817384. Its totient is φ = 4017237120.

The previous prime is 4356668629. The next prime is 4356668647. The reversal of 4356668641 is 1468666534.

It can be written as a sum of positive squares in 4 ways, for example, as 140625 + 4356528016 = 375^2 + 66004^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4356668641 - 2¹¹ = 4356666593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4356668647) 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 7 ways as a sum of consecutive naturals, for example, 166650 + ... + 191011.

It is an arithmetic number, because the mean of its divisors is an integer number (587102173).

Almost surely, 2^4356668641 is an apocalyptic number.

It is an amenable number.

4356668641 is a deficient number, since it is larger than the sum of its proper divisors (340148743).

4356668641 is a wasteful number, since it uses less digits than its factorization.

4356668641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358611.

The product of its digits is 2488320, while the sum is 49.

The square root of 4356668641 is about 66005.0652677505. The cubic root of 4356668641 is about 1633.2456489880.

The spelling of 4356668641 in words is "four billion, three hundred fifty-six million, six hundred sixty-eight thousand, six hundred forty-one".