11861671 has 2 divisors, whose sum is σ = 11861672. Its totient is φ = 11861670.

The previous prime is 11861659. The next prime is 11861683. The reversal of 11861671 is 17616811.

It is a balanced prime because it is at equal distance from previous prime (11861659) and next prime (11861683).

It is a cyclic number.

It is not a de Polignac number, because 11861671 - 2⁵ = 11861639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11861611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5930835 + 5930836.

It is an arithmetic number, because the mean of its divisors is an integer number (5930836).

Almost surely, 2^11861671 is an apocalyptic number.

11861671 is a deficient number, since it is larger than the sum of its proper divisors (1).

11861671 is an equidigital number, since it uses as much as digits as its factorization.

11861671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 31.

The square root of 11861671 is about 3444.0776704366. The cubic root of 11861671 is about 228.0597399116.

The spelling of 11861671 in words is "eleven million, eight hundred sixty-one thousand, six hundred seventy-one".