11397643 has 4 divisors (see below), whose sum is σ = 11535048. Its totient is φ = 11260240.

The previous prime is 11397629. The next prime is 11397689. The reversal of 11397643 is 34679311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34679311 = 71 ⋅488441.

It is a cyclic number.

It is not a de Polignac number, because 11397643 - 2⁵ = 11397611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11397599 and 11397608.

It is not an unprimeable number, because it can be changed into a prime (11097643) 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, 68578 + ... + 68743.

It is an arithmetic number, because the mean of its divisors is an integer number (2883762).

Almost surely, 2^11397643 is an apocalyptic number.

11397643 is a deficient number, since it is larger than the sum of its proper divisors (137405).

11397643 is an equidigital number, since it uses as much as digits as its factorization.

11397643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137404.

The product of its digits is 13608, while the sum is 34.

The square root of 11397643 is about 3376.0395436073. The cubic root of 11397643 is about 225.0461995666.

The spelling of 11397643 in words is "eleven million, three hundred ninety-seven thousand, six hundred forty-three".