3887865577 has 2 divisors, whose sum is σ = 3887865578. Its totient is φ = 3887865576.

The previous prime is 3887865571. The next prime is 3887865601. The reversal of 3887865577 is 7755687883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3435835456 + 452030121 = 58616^2 + 21261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3887865577 is a prime.

It is not a weakly prime, because it can be changed into another prime (3887865571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943932788 + 1943932789.

It is an arithmetic number, because the mean of its divisors is an integer number (1943932789).

Almost surely, 2^3887865577 is an apocalyptic number.

It is an amenable number.

3887865577 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887865577 is an equidigital number, since it uses as much as digits as its factorization.

3887865577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79027200, while the sum is 64.

The square root of 3887865577 is about 62352.7511582288. The cubic root of 3887865577 is about 1572.4267145099.

The spelling of 3887865577 in words is "three billion, eight hundred eighty-seven million, eight hundred sixty-five thousand, five hundred seventy-seven".