4064638257 has 12 divisors (see below), whose sum is σ = 5871964020. Its totient is φ = 2709380448.

The previous prime is 4064638247. The next prime is 4064638271. The reversal of 4064638257 is 7528364604.

4064638257 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 638 + 2 + 5 + 7 = 666.

4064638257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1616763681 + 2447874576 = 40209^2 + 49476^2 .

It is not a de Polignac number, because 4064638257 - 2¹¹ = 4064636209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4064638247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46719 + ... + 101547.

It is an arithmetic number, because the mean of its divisors is an integer number (489330335).

Almost surely, 2^4064638257 is an apocalyptic number.

It is an amenable number.

4064638257 is a deficient number, since it is larger than the sum of its proper divisors (1807325763).

4064638257 is a wasteful number, since it uses less digits than its factorization.

4064638257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63072 (or 63069 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 4064638257 is about 63754.5155812512. The cubic root of 4064638257 is about 1595.9059729877.

The spelling of 4064638257 in words is "four billion, sixty-four million, six hundred thirty-eight thousand, two hundred fifty-seven".