11780871 has 4 divisors (see below), whose sum is σ = 15707832. Its totient is φ = 7853912.

The previous prime is 11780863. The next prime is 11780887. The reversal of 11780871 is 17808711.

11780871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11780871 - 2³ = 11780863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780801) 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, 1963476 + ... + 1963481.

It is an arithmetic number, because the mean of its divisors is an integer number (3926958).

Almost surely, 2^11780871 is an apocalyptic number.

11780871 is a deficient number, since it is larger than the sum of its proper divisors (3926961).

11780871 is an equidigital number, since it uses as much as digits as its factorization.

11780871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926960.

The product of its (nonzero) digits is 3136, while the sum is 33.

The square root of 11780871 is about 3432.3273445288. The cubic root of 11780871 is about 227.5407228957.

The spelling of 11780871 in words is "eleven million, seven hundred eighty thousand, eight hundred seventy-one".