11998711 has 2 divisors, whose sum is σ = 11998712. Its totient is φ = 11998710.

The previous prime is 11998697. The next prime is 11998717. The reversal of 11998711 is 11789911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11998711 - 2¹³ = 11990519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11998717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5999355 + 5999356.

It is an arithmetic number, because the mean of its divisors is an integer number (5999356).

Almost surely, 2^11998711 is an apocalyptic number.

11998711 is a deficient number, since it is larger than the sum of its proper divisors (1).

11998711 is an equidigital number, since it uses as much as digits as its factorization.

11998711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 37.

The square root of 11998711 is about 3463.9155590170. The cubic root of 11998711 is about 228.9346507913.

The spelling of 11998711 in words is "eleven million, nine hundred ninety-eight thousand, seven hundred eleven".