11913697 has 4 divisors (see below), whose sum is σ = 11975620. Its totient is φ = 11851776.

The previous prime is 11913691. The next prime is 11913721. The reversal of 11913697 is 79631911.

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 8242641 + 3671056 = 2871^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 11913697 - 2³ = 11913689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11913691) 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 3 ways as a sum of consecutive naturals, for example, 30672 + ... + 31057.

It is an arithmetic number, because the mean of its divisors is an integer number (2993905).

Almost surely, 2^11913697 is an apocalyptic number.

It is an amenable number.

11913697 is a deficient number, since it is larger than the sum of its proper divisors (61923).

11913697 is an equidigital number, since it uses as much as digits as its factorization.

11913697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61922.

The product of its digits is 10206, while the sum is 37.

The square root of 11913697 is about 3451.6223721607. The cubic root of 11913697 is about 228.3926815141.

The spelling of 11913697 in words is "eleven million, nine hundred thirteen thousand, six hundred ninety-seven".