11697918 has 16 divisors (see below), whose sum is σ = 23432976. Its totient is φ = 3893120.

The previous prime is 11697859. The next prime is 11697919. The reversal of 11697918 is 81979611.

It is a self number, because there is not a number n which added to its sum of digits gives 11697918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11697919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180 + ... + 6392.

It is an arithmetic number, because the mean of its divisors is an integer number (1464561).

Almost surely, 2^11697918 is an apocalyptic number.

11697918 is an abundant number, since it is smaller than the sum of its proper divisors (11735058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11697918 is a wasteful number, since it uses less digits than its factorization.

11697918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 27216, while the sum is 42.

The square root of 11697918 is about 3420.2219226243. The cubic root of 11697918 is about 227.0054013606.

The spelling of 11697918 in words is "eleven million, six hundred ninety-seven thousand, nine hundred eighteen".