87234619 has 2 divisors, whose sum is σ = 87234620. Its totient is φ = 87234618.

The previous prime is 87234617. The next prime is 87234671. The reversal of 87234619 is 91643278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87234619 - 2¹ = 87234617 is a prime.

It is a super-2 number, since 2×87234619² = 15219757504150322, which contains 22 as substring.

Together with 87234617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87234611) 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, 43617309 + 43617310.

It is an arithmetic number, because the mean of its divisors is an integer number (43617310).

Almost surely, 2^87234619 is an apocalyptic number.

87234619 is a deficient number, since it is larger than the sum of its proper divisors (1).

87234619 is an equidigital number, since it uses as much as digits as its factorization.

87234619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 87234619 is about 9339.9474837924. The cubic root of 87234619 is about 443.5027218750.

The spelling of 87234619 in words is "eighty-seven million, two hundred thirty-four thousand, six hundred nineteen".