87343519 has 2 divisors, whose sum is σ = 87343520. Its totient is φ = 87343518.

The previous prime is 87343517. The next prime is 87343537. The reversal of 87343519 is 91534378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87343519 - 2¹ = 87343517 is a prime.

It is a super-2 number, since 2×87343519² = 15257780622606722, which contains 22 as substring.

Together with 87343517, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87343517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43671759 + 43671760.

It is an arithmetic number, because the mean of its divisors is an integer number (43671760).

Almost surely, 2^87343519 is an apocalyptic number.

87343519 is a deficient number, since it is larger than the sum of its proper divisors (1).

87343519 is an equidigital number, since it uses as much as digits as its factorization.

87343519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 87343519 is about 9345.7754627425. The cubic root of 87343519 is about 443.6871951319.

The spelling of 87343519 in words is "eighty-seven million, three hundred forty-three thousand, five hundred nineteen".