87056987 has 2 divisors, whose sum is σ = 87056988. Its totient is φ = 87056986.

The previous prime is 87056969. The next prime is 87056999. The reversal of 87056987 is 78965078.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87056987 - 2⁸ = 87056731 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (87056287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43528493 + 43528494.

It is an arithmetic number, because the mean of its divisors is an integer number (43528494).

Almost surely, 2^87056987 is an apocalyptic number.

87056987 is a deficient number, since it is larger than the sum of its proper divisors (1).

87056987 is an equidigital number, since it uses as much as digits as its factorization.

87056987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 87056987 is about 9330.4333768588. The cubic root of 87056987 is about 443.2014889882.

The spelling of 87056987 in words is "eighty-seven million, fifty-six thousand, nine hundred eighty-seven".