4066634639 has 2 divisors, whose sum is σ = 4066634640. Its totient is φ = 4066634638.

The previous prime is 4066634597. The next prime is 4066634681. The reversal of 4066634639 is 9364366604.

It is a balanced prime because it is at equal distance from previous prime (4066634597) and next prime (4066634681).

It is a cyclic number.

It is not a de Polignac number, because 4066634639 - 2¹² = 4066630543 is a prime.

It is a super-2 number, since 2×4066634639² = 33075034574229320642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4066634593 and 4066634602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4066639639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2033317319 + 2033317320.

It is an arithmetic number, because the mean of its divisors is an integer number (2033317320).

Almost surely, 2^4066634639 is an apocalyptic number.

4066634639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4066634639 is an equidigital number, since it uses as much as digits as its factorization.

4066634639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 47.

The square root of 4066634639 is about 63770.1704482590. The cubic root of 4066634639 is about 1596.1672111991.

The spelling of 4066634639 in words is "four billion, sixty-six million, six hundred thirty-four thousand, six hundred thirty-nine".