11653897 has 4 divisors (see below), whose sum is σ = 12267280. Its totient is φ = 11040516.

The previous prime is 11653883. The next prime is 11653909. The reversal of 11653897 is 79835611.

11653897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79835611 = 179 ⋅446009.

It is a cyclic number.

It is not a de Polignac number, because 11653897 - 2⁷ = 11653769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11653297) 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, 306663 + ... + 306700.

It is an arithmetic number, because the mean of its divisors is an integer number (3066820).

Almost surely, 2^11653897 is an apocalyptic number.

It is an amenable number.

11653897 is a deficient number, since it is larger than the sum of its proper divisors (613383).

11653897 is an equidigital number, since it uses as much as digits as its factorization.

11653897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613382.

The product of its digits is 45360, while the sum is 40.

The square root of 11653897 is about 3413.7804557411. The cubic root of 11653897 is about 226.7202917625.

The spelling of 11653897 in words is "eleven million, six hundred fifty-three thousand, eight hundred ninety-seven".