11716645 has 4 divisors (see below), whose sum is σ = 14059980. Its totient is φ = 9373312.

The previous prime is 11716613. The next prime is 11716669. The reversal of 11716645 is 54661711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4485924 + 7230721 = 2118^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 11716645 - 2⁵ = 11716613 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171660 + ... + 1171669.

It is an arithmetic number, because the mean of its divisors is an integer number (3514995).

Almost surely, 2^11716645 is an apocalyptic number.

It is an amenable number.

11716645 is a deficient number, since it is larger than the sum of its proper divisors (2343335).

11716645 is an equidigital number, since it uses as much as digits as its factorization.

11716645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343334.

The product of its digits is 5040, while the sum is 31.

The square root of 11716645 is about 3422.9585156703. The cubic root of 11716645 is about 227.1264731515.

The spelling of 11716645 in words is "eleven million, seven hundred sixteen thousand, six hundred forty-five".