87168619 has 2 divisors, whose sum is σ = 87168620. Its totient is φ = 87168618.

The previous prime is 87168607. The next prime is 87168661. The reversal of 87168619 is 91686178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87168619 - 2¹¹ = 87166571 is a prime.

It is a super-2 number, since 2×87168619² = 15196736276734322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87162619) 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, 43584309 + 43584310.

It is an arithmetic number, because the mean of its divisors is an integer number (43584310).

Almost surely, 2^87168619 is an apocalyptic number.

87168619 is a deficient number, since it is larger than the sum of its proper divisors (1).

87168619 is an equidigital number, since it uses as much as digits as its factorization.

87168619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 87168619 is about 9336.4136048056. The cubic root of 87168619 is about 443.3908451717.

The spelling of 87168619 in words is "eighty-seven million, one hundred sixty-eight thousand, six hundred nineteen".