11747217 has 4 divisors (see below), whose sum is σ = 15662960. Its totient is φ = 7831476.

The previous prime is 11747207. The next prime is 11747231. The reversal of 11747217 is 71274711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11747217 - 2¹⁵ = 11714449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11747207) 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, 1957867 + ... + 1957872.

It is an arithmetic number, because the mean of its divisors is an integer number (3915740).

Almost surely, 2^11747217 is an apocalyptic number.

It is an amenable number.

11747217 is a deficient number, since it is larger than the sum of its proper divisors (3915743).

11747217 is an equidigital number, since it uses as much as digits as its factorization.

11747217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915742.

The product of its digits is 2744, while the sum is 30.

The square root of 11747217 is about 3427.4213338894. The cubic root of 11747217 is about 227.3238470561.

The spelling of 11747217 in words is "eleven million, seven hundred forty-seven thousand, two hundred seventeen".