87343591 has 2 divisors, whose sum is σ = 87343592. Its totient is φ = 87343590.

The previous prime is 87343579. The next prime is 87343601. The reversal of 87343591 is 19534378.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87343591 - 2⁵ = 87343559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87043591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43671795 + 43671796.

It is an arithmetic number, because the mean of its divisors is an integer number (43671796).

Almost surely, 2^87343591 is an apocalyptic number.

87343591 is a deficient number, since it is larger than the sum of its proper divisors (1).

87343591 is an equidigital number, since it uses as much as digits as its factorization.

87343591 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 87343591 is about 9345.7793147495. The cubic root of 87343591 is about 443.6873170469.

The spelling of 87343591 in words is "eighty-seven million, three hundred forty-three thousand, five hundred ninety-one".