4287772681 has 2 divisors, whose sum is σ = 4287772682. Its totient is φ = 4287772680.

The previous prime is 4287772673. The next prime is 4287772733. The reversal of 4287772681 is 1862777824.

4287772681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (4287772733) can be obtained adding 4287772681 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3884405625 + 403367056 = 62325^2 + 20084^2 .

It is a cyclic number.

It is not a de Polignac number, because 4287772681 - 2³ = 4287772673 is a prime.

It is a super-2 number, since 2×4287772681² = 36769989127859855522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4287772651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2143886340 + 2143886341.

It is an arithmetic number, because the mean of its divisors is an integer number (2143886341).

Almost surely, 2^4287772681 is an apocalyptic number.

It is an amenable number.

4287772681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4287772681 is an equidigital number, since it uses as much as digits as its factorization.

4287772681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2107392, while the sum is 52.

The square root of 4287772681 is about 65481.0864372301. The cubic root of 4287772681 is about 1624.5905311183.

The spelling of 4287772681 in words is "four billion, two hundred eighty-seven million, seven hundred seventy-two thousand, six hundred eighty-one".