11771671 has 4 divisors (see below), whose sum is σ = 11993832. Its totient is φ = 11549512.

The previous prime is 11771657. The next prime is 11771677. The reversal of 11771671 is 17617711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17617711 = 79 ⋅223009.

It is a cyclic number.

It is not a de Polignac number, because 11771671 - 2¹¹ = 11769623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111001 + ... + 111106.

It is an arithmetic number, because the mean of its divisors is an integer number (2998458).

Almost surely, 2^11771671 is an apocalyptic number.

11771671 is a deficient number, since it is larger than the sum of its proper divisors (222161).

11771671 is an equidigital number, since it uses as much as digits as its factorization.

11771671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222160.

The product of its digits is 2058, while the sum is 31.

The square root of 11771671 is about 3430.9868842652. The cubic root of 11771671 is about 227.4814765742.

The spelling of 11771671 in words is "eleven million, seven hundred seventy-one thousand, six hundred seventy-one".