11687801 has 2 divisors, whose sum is σ = 11687802. Its totient is φ = 11687800.

The previous prime is 11687771. The next prime is 11687803. The reversal of 11687801 is 10878611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10530025 + 1157776 = 3245^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 11687801 - 2¹⁰ = 11686777 is a prime.

It is a Sophie Germain prime.

Together with 11687803, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11687803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5843900 + 5843901.

It is an arithmetic number, because the mean of its divisors is an integer number (5843901).

Almost surely, 2^11687801 is an apocalyptic number.

It is an amenable number.

11687801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11687801 is an equidigital number, since it uses as much as digits as its factorization.

11687801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 11687801 is about 3418.7426051108. The cubic root of 11687801 is about 226.9399402520.

The spelling of 11687801 in words is "eleven million, six hundred eighty-seven thousand, eight hundred one".