11671345 has 24 divisors (see below), whose sum is σ = 16587072. Its totient is φ = 7722720.

The previous prime is 11671343. The next prime is 11671349. The reversal of 11671345 is 54317611.

It is not a de Polignac number, because 11671345 - 2¹ = 11671343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11671343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33462 + ... + 33808.

It is an arithmetic number, because the mean of its divisors is an integer number (691128).

Almost surely, 2^11671345 is an apocalyptic number.

It is an amenable number.

11671345 is a deficient number, since it is larger than the sum of its proper divisors (4915727).

11671345 is an equidigital number, since it uses as much as digits as its factorization.

11671345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 390 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 11671345 is about 3416.3350245548. The cubic root of 11671345 is about 226.8333824909.

Adding to 11671345 its reverse (54317611), we get a palindrome (65988956).

The spelling of 11671345 in words is "eleven million, six hundred seventy-one thousand, three hundred forty-five".