11738665 has 4 divisors (see below), whose sum is σ = 14086404. Its totient is φ = 9390928.

The previous prime is 11738659. The next prime is 11738681. The reversal of 11738665 is 56683711.

11738665 is digitally balanced in base 2, 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 can be written as a sum of positive squares in 2 ways, for example, as 7750656 + 3988009 = 2784^2 + 1997^2 .

It is a cyclic number.

It is not a de Polignac number, because 11738665 - 2¹⁹ = 11214377 is a prime.

It is a Duffinian 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, 1173862 + ... + 1173871.

It is an arithmetic number, because the mean of its divisors is an integer number (3521601).

Almost surely, 2^11738665 is an apocalyptic number.

It is an amenable number.

11738665 is a deficient number, since it is larger than the sum of its proper divisors (2347739).

11738665 is an equidigital number, since it uses as much as digits as its factorization.

11738665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347738.

The product of its digits is 30240, while the sum is 37.

The square root of 11738665 is about 3426.1735215835. The cubic root of 11738665 is about 227.2686695760.

It can be divided in two parts, 11738 and 665, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 11738665 in words is "eleven million, seven hundred thirty-eight thousand, six hundred sixty-five".