11961711 has 24 divisors (see below), whose sum is σ = 17821440. Its totient is φ = 7728336.

The previous prime is 11961683. The next prime is 11961721. The reversal of 11961711 is 11716911.

It is not a de Polignac number, because 11961711 - 2⁶ = 11961647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49930 + ... + 50168.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^11961711 is an apocalyptic number.

11961711 is a deficient number, since it is larger than the sum of its proper divisors (5859729).

11961711 is a wasteful number, since it uses less digits than its factorization.

11961711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 392 counting only the distinct ones).

The product of its digits is 378, while the sum is 27.

The square root of 11961711 is about 3458.5706585235. The cubic root of 11961711 is about 228.6990892703.

The spelling of 11961711 in words is "eleven million, nine hundred sixty-one thousand, seven hundred eleven".