11917065 has 8 divisors (see below), whose sum is σ = 19067328. Its totient is φ = 6355760.

The previous prime is 11917049. The next prime is 11917067. The reversal of 11917065 is 56071911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11917065 - 2⁴ = 11917049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11917067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397221 + ... + 397250.

It is an arithmetic number, because the mean of its divisors is an integer number (2383416).

Almost surely, 2^11917065 is an apocalyptic number.

11917065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11917065 is a deficient number, since it is larger than the sum of its proper divisors (7150263).

11917065 is an equidigital number, since it uses as much as digits as its factorization.

11917065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794479.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 11917065 is about 3452.1102241962. The cubic root of 11917065 is about 228.4142016763.

Adding to 11917065 its reverse (56071911), we get a palindrome (67988976).

It can be divided in two parts, 1191 and 7065, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 11917065 in words is "eleven million, nine hundred seventeen thousand, sixty-five".