87691711 has 2 divisors, whose sum is σ = 87691712. Its totient is φ = 87691710.

The previous prime is 87691687. The next prime is 87691717. The reversal of 87691711 is 11719678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87691711 - 2¹¹ = 87689663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87691717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43845855 + 43845856.

It is an arithmetic number, because the mean of its divisors is an integer number (43845856).

Almost surely, 2^87691711 is an apocalyptic number.

87691711 is a deficient number, since it is larger than the sum of its proper divisors (1).

87691711 is an equidigital number, since it uses as much as digits as its factorization.

87691711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 40.

The square root of 87691711 is about 9364.3852441044. The cubic root of 87691711 is about 444.2759947725.

The spelling of 87691711 in words is "eighty-seven million, six hundred ninety-one thousand, seven hundred eleven".