11718665 has 16 divisors (see below), whose sum is σ = 16219008. Its totient is φ = 7961856.

The previous prime is 11718647. The next prime is 11718689. The reversal of 11718665 is 56681711.

It is not a de Polignac number, because 11718665 - 2¹² = 11714569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (1013688).

Almost surely, 2^11718665 is an apocalyptic number.

It is an amenable number.

11718665 is a deficient number, since it is larger than the sum of its proper divisors (4500343).

11718665 is a wasteful number, since it uses less digits than its factorization.

11718665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088.

The product of its digits is 10080, while the sum is 35.

The square root of 11718665 is about 3423.2535693401. The cubic root of 11718665 is about 227.1395249285.

The spelling of 11718665 in words is "eleven million, seven hundred eighteen thousand, six hundred sixty-five".