87328987 has 2 divisors, whose sum is σ = 87328988. Its totient is φ = 87328986.

The previous prime is 87328973. The next prime is 87329041. The reversal of 87328987 is 78982378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87328987 - 2¹⁹ = 86804699 is a prime.

It is not a weakly prime, because it can be changed into another prime (87328957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43664493 + 43664494.

It is an arithmetic number, because the mean of its divisors is an integer number (43664494).

Almost surely, 2^87328987 is an apocalyptic number.

87328987 is a deficient number, since it is larger than the sum of its proper divisors (1).

87328987 is an equidigital number, since it uses as much as digits as its factorization.

87328987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 87328987 is about 9344.9979668270. The cubic root of 87328987 is about 443.6625872388.

The spelling of 87328987 in words is "eighty-seven million, three hundred twenty-eight thousand, nine hundred eighty-seven".