7886987 has 2 divisors, whose sum is σ = 7886988. Its totient is φ = 7886986.

The previous prime is 7886959. The next prime is 7887001. The reversal of 7886987 is 7896887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7886987 - 2⁸ = 7886731 is a prime.

It is not a weakly prime, because it can be changed into another prime (7886917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3943493 + 3943494.

It is an arithmetic number, because the mean of its divisors is an integer number (3943494).

Almost surely, 2^7886987 is an apocalyptic number.

7886987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7886987 is an equidigital number, since it uses as much as digits as its factorization.

7886987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 53.

The square root of 7886987 is about 2808.3780016230. The cubic root of 7886987 is about 199.0537551640.

The spelling of 7886987 in words is "seven million, eight hundred eighty-six thousand, nine hundred eighty-seven".