11701691 has 4 divisors (see below), whose sum is σ = 11893584. Its totient is φ = 11509800.

The previous prime is 11701673. The next prime is 11701693. The reversal of 11701691 is 19610711.

11701691 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2^k-11701691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11701691.

It is not an unprimeable number, because it can be changed into a prime (11701693) 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, 95855 + ... + 95976.

It is an arithmetic number, because the mean of its divisors is an integer number (2973396).

Almost surely, 2^11701691 is an apocalyptic number.

11701691 is a deficient number, since it is larger than the sum of its proper divisors (191893).

11701691 is an equidigital number, since it uses as much as digits as its factorization.

11701691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191892.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 11701691 is about 3420.7734505518. The cubic root of 11701691 is about 227.0298045439.

The spelling of 11701691 in words is "eleven million, seven hundred one thousand, six hundred ninety-one".