4424067661 has 4 divisors (see below), whose sum is σ = 4764380572. Its totient is φ = 4083754752.

The previous prime is 4424067643. The next prime is 4424067667. The reversal of 4424067661 is 1667604244.

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 1515622761 + 2908444900 = 38931^2 + 53930^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424067661 - 2¹⁹ = 4423543373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4424067667) 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 3 ways as a sum of consecutive naturals, for example, 170156436 + ... + 170156461.

It is an arithmetic number, because the mean of its divisors is an integer number (1191095143).

Almost surely, 2^4424067661 is an apocalyptic number.

It is an amenable number.

4424067661 is a deficient number, since it is larger than the sum of its proper divisors (340312911).

4424067661 is a wasteful number, since it uses less digits than its factorization.

4424067661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340312910.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 4424067661 is about 66513.6652200132. The cubic root of 4424067661 is about 1641.6248595925.

The spelling of 4424067661 in words is "four billion, four hundred twenty-four million, sixty-seven thousand, six hundred sixty-one".