11655791 has 8 divisors (see below), whose sum is σ = 13378560. Its totient is φ = 9947448.

The previous prime is 11655781. The next prime is 11655799. The reversal of 11655791 is 19755611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11655791 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 (11655799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811 + ... + 5156.

It is an arithmetic number, because the mean of its divisors is an integer number (1672320).

Almost surely, 2^11655791 is an apocalyptic number.

11655791 is a deficient number, since it is larger than the sum of its proper divisors (1722769).

11655791 is an equidigital number, since it uses as much as digits as its factorization.

11655791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213.

The product of its digits is 9450, while the sum is 35.

The square root of 11655791 is about 3414.0578495392. The cubic root of 11655791 is about 226.7325733473.

The spelling of 11655791 in words is "eleven million, six hundred fifty-five thousand, seven hundred ninety-one".