3866564797 has 2 divisors, whose sum is σ = 3866564798. Its totient is φ = 3866564796.

The previous prime is 3866564791. The next prime is 3866564827. The reversal of 3866564797 is 7974656683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3858148996 + 8415801 = 62114^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 3866564797 - 2¹⁹ = 3866040509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3866564791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933282398 + 1933282399.

It is an arithmetic number, because the mean of its divisors is an integer number (1933282399).

Almost surely, 2^3866564797 is an apocalyptic number.

It is an amenable number.

3866564797 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866564797 is an equidigital number, since it uses as much as digits as its factorization.

3866564797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 61.

The square root of 3866564797 is about 62181.7078970978. The cubic root of 3866564797 is about 1569.5497913954.

The spelling of 3866564797 in words is "three billion, eight hundred sixty-six million, five hundred sixty-four thousand, seven hundred ninety-seven".