11718797 has 4 divisors (see below), whose sum is σ = 12408156. Its totient is φ = 11029440.

The previous prime is 11718787. The next prime is 11718809. The reversal of 11718797 is 79781711.

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 10883401 + 835396 = 3299^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11718797 - 2¹⁰ = 11717773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11718787) 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 3 ways as a sum of consecutive naturals, for example, 344654 + ... + 344687.

It is an arithmetic number, because the mean of its divisors is an integer number (3102039).

Almost surely, 2^11718797 is an apocalyptic number.

11718797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11718797 is a deficient number, since it is larger than the sum of its proper divisors (689359).

11718797 is an equidigital number, since it uses as much as digits as its factorization.

11718797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689358.

The product of its digits is 24696, while the sum is 41.

The square root of 11718797 is about 3423.2728491898. The cubic root of 11718797 is about 227.1403777647.

The spelling of 11718797 in words is "eleven million, seven hundred eighteen thousand, seven hundred ninety-seven".