4066535257 has 4 divisors (see below), whose sum is σ = 4066767540. Its totient is φ = 4066302976.

The previous prime is 4066535233. The next prime is 4066535273. The reversal of 4066535257 is 7525356604.

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 15085456 + 4051449801 = 3884^2 + 63651^2 .

It is a cyclic number.

It is not a de Polignac number, because 4066535257 - 2⁷ = 4066535129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4066835257) 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, 87532 + ... + 125677.

It is an arithmetic number, because the mean of its divisors is an integer number (1016691885).

Almost surely, 2^4066535257 is an apocalyptic number.

It is an amenable number.

4066535257 is a deficient number, since it is larger than the sum of its proper divisors (232283).

4066535257 is a wasteful number, since it uses less digits than its factorization.

4066535257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232282.

The product of its (nonzero) digits is 756000, while the sum is 43.

The square root of 4066535257 is about 63769.3912233761. The cubic root of 4066535257 is about 1596.1542085080.

The spelling of 4066535257 in words is "four billion, sixty-six million, five hundred thirty-five thousand, two hundred fifty-seven".