87087019 has 2 divisors, whose sum is σ = 87087020. Its totient is φ = 87087018.

The previous prime is 87087001. The next prime is 87087041. The reversal of 87087019 is 91078078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87087019 - 2¹¹ = 87084971 is a prime.

It is a super-2 number, since 2×87087019² = 15168297756612722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87087079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43543509 + 43543510.

It is an arithmetic number, because the mean of its divisors is an integer number (43543510).

Almost surely, 2^87087019 is an apocalyptic number.

87087019 is a deficient number, since it is larger than the sum of its proper divisors (1).

87087019 is an equidigital number, since it uses as much as digits as its factorization.

87087019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 87087019 is about 9332.0425952736. The cubic root of 87087019 is about 443.2524467854.

The spelling of 87087019 in words is "eighty-seven million, eighty-seven thousand, nineteen".